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Water hardness products

Water hardness is an essential element to keep an eye on for your garden pond. It is necessary to control the level of GH & KH several times a year if you have a pond with fish and plants. A high level of hardness guarantees the good health of your fish in the event of pollution in the water. It is also a complementary contribution in minerals which will allow plants and fish to develop well.

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Original price €24,10 - Original price €24,10
Original price
€24,10
€24,10 - €24,10
Current price €24,10

Aquipond GH+ 1kg - Increases overall hardness

This product developed by AQUIPOND allows you to increase the GH+ in your pool and improve water quality. Based on mineral salts and trace eleme...

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Original price €24,10 - Original price €24,10
Original price
€24,10
€24,10 - €24,10
Current price €24,10
Our experts' choice
Aquipond KH+ 1kg - Increases Carbonate Hardness (KH) – photo 2
Aquipond KH+ 1kg - Increases Carbonate Hardness (KH) -13 % Aquipond KH+ 1kg - Increases Carbonate Hardness (KH)
Original price €24,10
Original price €24,10 - Original price €24,10
Original price €24,10
Current price €20,95
€20,95 - €20,95
Current price €20,95

Aquipond KH+ 1kg - Increases Carbonate Hardness (KH)

Aquipond KH+ 1KG - Balance / Minerals for ponds This product developed by AQUIPOND allows you to increase the KH+ in your pond and improve ...

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Original price €24,10
Original price €24,10 - Original price €24,10
Original price €24,10
Current price €20,95
€20,95 - €20,95
Current price €20,95
-13 %
Original price €68,20 - Original price €68,20
Original price
€68,20
€68,20 - €68,20
Current price €68,20

Aquipond GH+ 5kg - Increases General Hardness (GH)

This product developed by AQUIPOND allows you to increase the GH+ in your pond and improve water quality. This GH+ Aquipond also contains trace ele...

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Original price €68,20 - Original price €68,20
Original price
€68,20
€68,20 - €68,20
Current price €68,20
Original price €68,20 - Original price €68,20
Original price
€68,20
€68,20 - €68,20
Current price €68,20

Aquipond KH+ 5kg - Increases carbonate hardness

This product developed by AQUIPOND allows you to increase the KH+ in your pond and improve water quality. Aquipond KH+ 5KG - Balance / Mineral...

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Original price €68,20 - Original price €68,20
Original price
€68,20
€68,20 - €68,20
Current price €68,20
Original price €167,95 - Original price €167,95
Original price
€167,95
€167,95 - €167,95
Current price €167,95

Aquipond GH+ 15kg - Increases total hardness (GH)

This product developed by AQUIPOND allows you to increase the GH+ in your pool and improve water quality. Based on mineral salts and trace elemen...

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Original price €167,95 - Original price €167,95
Original price
€167,95
€167,95 - €167,95
Current price €167,95
Original price €167,95 - Original price €167,95
Original price
€167,95
€167,95 - €167,95
Current price €167,95

Aquipond KH+ 15kg - Increases carbonate hardness

This product developed by AQUIPOND allows you to increase the KH+ in your pond and improve water quality. Aquipond KH+ 15KG - Balance / Minerals...

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Original price €167,95 - Original price €167,95
Original price
€167,95
€167,95 - €167,95
Current price €167,95
Original price €26,20
Original price €26,20 - Original price €26,20
Original price €26,20
Current price €24,10
€24,10 - €24,10
Current price €24,10

IchiPond GH+ 1kg - Aquatic Science

GH+ increases the total hardness of water (mineral salts). Optimal GH should be above KH and usually above 8. Rainwater lowers GH. A value that is...

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Original price €26,20
Original price €26,20 - Original price €26,20
Original price €26,20
Current price €24,10
€24,10 - €24,10
Current price €24,10
-8 %
Original price €62,95 - Original price €62,95
Original price
€62,95
€62,95 - €62,95
Current price €62,95

IchiPond GH+ 5kg - Aquatic Science

GH+ increases the total hardness of water (mineral salts). Optimal GH should be above KH and usually above 8. Rainwater lowers GH. A value that is...

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Original price €62,95 - Original price €62,95
Original price
€62,95
€62,95 - €62,95
Current price €62,95
Original price €188,95
Original price €188,95 - Original price €188,95
Original price €188,95
Current price €176,20
€176,20 - €176,20
Current price €176,20

IchiPond GH+ 15kg - Aquatic Science

GH+ increases the total hardness of water (mineral salts). Optimal GH should be above KH and usually above 8. Rainwater lowers GH. A value that is...

View full details
Original price €188,95
Original price €188,95 - Original price €188,95
Original price €188,95
Current price €176,20
€176,20 - €176,20
Current price €176,20
-7 %
Original price €26,20
Original price €26,20 - Original price €26,20
Original price €26,20
Current price €24,10
€24,10 - €24,10
Current price €24,10

IchiPond KH+ 1kg - Aquatic Science

KH+ increases the carbonate hardness of the water as well as the pH. An optimal KH is above 6°A and always below GH. Rainwater lowers the KH. Too ...

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Original price €26,20
Original price €26,20 - Original price €26,20
Original price €26,20
Current price €24,10
€24,10 - €24,10
Current price €24,10
-8 %
Original price €62,95 - Original price €62,95
Original price
€62,95
€62,95 - €62,95
Current price €62,95

IchiPond KH+ 5kg - Aquatic Science

KH+ increases the carbonate hardness of the water as well as the pH. An optimal KH is above 6°A and always below GH. Rainwater lowers the KH. Too l...

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Original price €62,95 - Original price €62,95
Original price
€62,95
€62,95 - €62,95
Current price €62,95
Original price €178,45
Original price €178,45 - Original price €178,45
Original price €178,45
Current price €162,55
€162,55 - €162,55
Current price €162,55

IchiPond KH+ 15kg - Aquatic Science

KH+ increases the carbonate hardness of the water as well as the pH. An optimal KH is above 6°A and always below GH. Rainwater lowers the KH. Too l...

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Original price €178,45
Original price €178,45 - Original price €178,45
Original price €178,45
Current price €162,55
€162,55 - €162,55
Current price €162,55
-9 %
Original price €16,58 - Original price €16,58
Original price
€16,58
€16,58 - €16,58
Current price €16,58

Colombo GH+ 1000ml - Increases overall hardness

Good total hardness (GH) is an essential requirement for clean water. The GH indicates the concentration of dissolved minerals in your pond, which...

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Original price €16,58 - Original price €16,58
Original price
€16,58
€16,58 - €16,58
Current price €16,58
Original price €24,14 - Original price €24,14
Original price
€24,14
€24,14 - €24,14
Current price €24,14

Colombo GH+ 2500ml - Increases overall hardness

Good total hardness (GH) is an essential requirement for clean water. The GH indicates the concentration of dissolved minerals in your pond, which ...

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Original price €24,14 - Original price €24,14
Original price
€24,14
€24,14 - €24,14
Current price €24,14
Original price €38,84 - Original price €38,84
Original price
€38,84
€38,84 - €38,84
Current price €38,84

Colombo GH+ 5000ml - Increases overall hardness

Good total hardness (GH) is an essential requirement for clean water. The GH indicates the concentration of dissolved minerals in your pond, which...

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Original price €38,84 - Original price €38,84
Original price
€38,84
€38,84 - €38,84
Current price €38,84
Original price €125,95 - Original price €125,95
Original price
€125,95
€125,95 - €125,95
Current price €125,95

Colombo GH+ 15000ml - Increases overall hardness

Good total hardness (GH) is an essential requirement for clean water. The GH indicates the concentration of dissolved minerals in your pond, which...

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Original price €125,95 - Original price €125,95
Original price
€125,95
€125,95 - €125,95
Current price €125,95
Original price €17,63 - Original price €17,63
Original price
€17,63
€17,63 - €17,63
Current price €17,63

Colombo KH+ 1000ml - Increases carbonate hardness

A good carbonate hardness (KH) is a prerequisite for clear pond water, healthy plants and fish and a stable acidity level (pH). The KH indicates t...

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Original price €17,63 - Original price €17,63
Original price
€17,63
€17,63 - €17,63
Current price €17,63
Original price €28,86 - Original price €28,86
Original price
€28,86
€28,86 - €28,86
Current price €28,86

Colombo KH+ 2500ml - Increases carbonate hardness

A good carbonate hardness (KH) is a prerequisite for clear pond water, healthy plants and fish and a stable acidity level (pH). The KH indicates th...

View full details
Original price €28,86 - Original price €28,86
Original price
€28,86
€28,86 - €28,86
Current price €28,86
Original price €45,14 - Original price €45,14
Original price
€45,14
€45,14 - €45,14
Current price €45,14

Colombo KH+ 5000ml - Increases carbonate hardness

A good carbonate hardness (KH) is a prerequisite for clear pond water, healthy plants and fish and a stable acidity level (pH). The KH indicates t...

View full details
Original price €45,14 - Original price €45,14
Original price
€45,14
€45,14 - €45,14
Current price €45,14
Original price €104,95 - Original price €104,95
Original price
€104,95
€104,95 - €104,95
Current price €104,95

Colombo KH+ 15000ml - Increases carbonate hardness

A good carbonate hardness (KH) is a prerequisite for clear pond water, healthy plants and fish and a stable acidity level (pH). The KH indicates t...

View full details
Original price €104,95 - Original price €104,95
Original price
€104,95
€104,95 - €104,95
Current price €104,95
Original price €22,00 - Original price €22,00
Original price
€22,00
€22,00 - €22,00
Current price €22,00

AquaActiv OptiPond 500ml - Pond stabilizer

Oase

OptiPond is a pond stabilizer that creates optimal water conditions and stabilizes key parameters. Rainwater or well water with a low mineral cont...

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Original price €22,00 - Original price €22,00
Original price
€22,00
€22,00 - €22,00
Current price €22,00
Original price €104,95 - Original price €104,95
Original price
€104,95
€104,95 - €104,95
Current price €104,95

AquaActiv OptiPond 5L - Pond stabilizer

Oase

OptiPond is a pond stabilizer that creates optimal water conditions and stabilizes key parameters. Rainwater or well water with a low mineral cont...

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Original price €104,95 - Original price €104,95
Original price
€104,95
€104,95 - €104,95
Current price €104,95
Original price €28,30 - Original price €28,30
Original price
€28,30
€28,30 - €28,30
Current price €28,30

AquaActiv BioKick Care 500ml - Ensures high mineral content

Oase

BioKick Care ensures a particularly high mineral content in the water and stabilizes the biological balance. Certain microorganisms guarantee cryst...

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Original price €28,30 - Original price €28,30
Original price
€28,30
€28,30 - €28,30
Current price €28,30
Original price €115,45 - Original price €115,45
Original price
€115,45
€115,45 - €115,45
Current price €115,45

AquaActiv BioKick Care 2L - Ensures high mineral content

Oase

BioKick Care ensures a particularly high mineral content in the water and stabilizes the biological balance. Certain microorganisms guarantee crys...

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Original price €115,45 - Original price €115,45
Original price
€115,45
€115,45 - €115,45
Current price €115,45
Original price €17,80 - Original price €17,80
Original price
€17,80
€17,80 - €17,80
Current price €17,80

Optiminera 10000 - Increases and stabilizes water hardness - IchiPond

Aquatic Science

Optiminera increases and stabilizes pH, GH and KH. Rich in natural minerals and trace elements. Optiminera's natural minerals optimize pH and hard...

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Original price €17,80 - Original price €17,80
Original price
€17,80
€17,80 - €17,80
Current price €17,80
Original price €26,20 - Original price €26,20
Original price
€26,20
€26,20 - €26,20
Current price €26,20

Optiminera 20000 - Increases and stabilizes water hardness - IchiPond

Aquatic Science

  Optiminera increases and stabilizes pH, GH, and KH. Rich in natural minerals and trace elements. Optiminera's natural minerals optimize...

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Original price €26,20 - Original price €26,20
Original price
€26,20
€26,20 - €26,20
Current price €26,20
Original price €31,45 - Original price €31,45
Original price
€31,45
€31,45 - €31,45
Current price €31,45

AquaForte Bio-Stabil 2.5kg - Water quality enhancer

BioStabil does what its name promises: to ensure a stable pond environment for Koi and other fish by permanently guaranteeing a natural pH value, ...

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Original price €31,45 - Original price €31,45
Original price
€31,45
€31,45 - €31,45
Current price €31,45
Original price €10,45 - Original price €10,45
Original price
€10,45
€10,45 - €10,45
Current price €10,45

AquaForte GH+ 1kg - Increases overall hardness

Increases the total hardness (GH-value magnesium/calcium hardness) of the pond water. Dosage: 25 ml/gr of GH+ is suitable to increase the value of...

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Original price €10,45 - Original price €10,45
Original price
€10,45
€10,45 - €10,45
Current price €10,45
Original price €20,95 - Original price €20,95
Original price
€20,95
€20,95 - €20,95
Current price €20,95

AquaForte GH+ 2.5kg - Increases overall hardness

Increases the total hardness (GH-value magnesium/calcium hardness) of the pond water. Dosage: 25 ml/gr of GH+ is suitable to increase the value of ...

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Original price €20,95 - Original price €20,95
Original price
€20,95
€20,95 - €20,95
Current price €20,95
Original price €73,45 - Original price €73,45
Original price
€73,45
€73,45 - €73,45
Current price €73,45

AquaForte GH+ 10kg - Increases overall hardness

Increases the total hardness (GH-value magnesium/calcium hardness) of the pond water. Dosage: 25 ml/gr of GH+ is suitable to increase the value of...

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Original price €73,45 - Original price €73,45
Original price
€73,45
€73,45 - €73,45
Current price €73,45
Original price €10,45 - Original price €10,45
Original price
€10,45
€10,45 - €10,45
Current price €10,45

AquaForte KH+ 1kg - Increases carbonate hardness

Increases the KH value (carbonate hardness) of pond water. Dosage: 25 ml/gr of KH+ is suitable to increase the value of 150 liters of water by 3 t...

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Original price €10,45 - Original price €10,45
Original price
€10,45
€10,45 - €10,45
Current price €10,45
Original price €83,95 - Original price €83,95
Original price
€83,95
€83,95 - €83,95
Current price €83,95

AquaForte KH+ 10kg - Increases carbonate hardness

Increases the KH value (carbonate hardness) of pond water. Dosage: 25 ml/kg of KH+ is suitable to raise the value of 150 liters of water by 3 to 4 ...

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Original price €83,95 - Original price €83,95
Original price
€83,95
€83,95 - €83,95
Current price €83,95
Original price €12,81 - Original price €12,81
Original price
€12,81
€12,81 - €12,81
Current price €12,81

House of Kata - GH Balance - 1Kg

GH Balance is a quick way to raise water hardness. Is applied in ponds with too low a GH. Increases the hardness (GH value) of pond water Dir...

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Original price €12,81 - Original price €12,81
Original price
€12,81
€12,81 - €12,81
Current price €12,81
Original price €24,10 - Original price €24,10
Original price
€24,10
€24,10 - €24,10
Current price €24,10

House of Kata GH Balance - Raises water GH hardness 4 kg

GH Balance is a quick way to raise water hardness. Is applied in ponds with too low a GH. Increases the hardness (GH value) of pond water Dir...

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Original price €24,10 - Original price €24,10
Original price
€24,10
€24,10 - €24,10
Current price €24,10
Original price €12,34 - Original price €12,34
Original price
€12,34
€12,34 - €12,34
Current price €12,34

House of Kata KH Balance - Raises water KH 1 kg

KH Balance is a quick way to boost the KH value of water. Is applied in basins with low hardness. Increases the carbon hardness of pond water....

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Original price €12,34 - Original price €12,34
Original price
€12,34
€12,34 - €12,34
Current price €12,34
Original price €24,10 - Original price €24,10
Original price
€24,10
€24,10 - €24,10
Current price €24,10

House of Kata - KH Balance - 4Kg

KH Balance is a quick way to boost the KH value of water. Is applied in basins with low hardness. Increases the carbon hardness of pond water...

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Original price €24,10 - Original price €24,10
Original price
€24,10
€24,10 - €24,10
Current price €24,10
Best price
House of Kata OXY-P - Active oxygen for ponds 1 kg
-5 % House of Kata OXY-P - Active oxygen for ponds 1 kg
Original price €14,86
Original price €14,86 - Original price €14,86
Original price €14,86
Current price €14,16
€14,16 - €14,16
Current price €14,16

House of Kata OXY-P - Active oxygen for ponds 1 kg

Rapid effect against thread algae. • Promotes waste degradation organic. • Fights cloudy water in the pond. Bleaching medium after treatment of t...

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Original price €14,86
Original price €14,86 - Original price €14,86
Original price €14,86
Current price €14,16
€14,16 - €14,16
Current price €14,16
-5 %
Original price €45,05 - Original price €45,05
Original price
€45,05
€45,05 - €45,05
Current price €45,05

House of Kata OXY-P - Active oxygen for ponds 5 kg

Rapid effect against thread algae. • Promotes waste degradation organic. • Fights cloudy water in the pond. Bleaching medium after treatment of th...

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Original price €45,05 - Original price €45,05
Original price
€45,05
€45,05 - €45,05
Current price €45,05
Original price €11,75 - Original price €11,75
Original price
€11,75
€11,75 - €11,75
Current price €11,75

Sera phosvec·clear - 250 ml

A clear view Eliminates mineral-based cloudiness Eliminates phosphates, the main nutrient for algae Ensures long-lasting clean and crystal-clea...

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Original price €11,75 - Original price €11,75
Original price
€11,75
€11,75 - €11,75
Current price €11,75
Original price €10,45 - Original price €10,45
Original price
€10,45
€10,45 - €10,45
Current price €10,45

IchiPond GH+ 0.4kg - Aquatic Science

GH+ increases the total hardness of water (mineral salts). Optimal GH should be above KH and usually above 8. Rainwater lowers GH. A value that i...

View full details
Original price €10,45 - Original price €10,45
Original price
€10,45
€10,45 - €10,45
Current price €10,45
Original price €10,45 - Original price €10,45
Original price
€10,45
€10,45 - €10,45
Current price €10,45

IchiPond KH+ 0.4kg - Aquatic Science

KH+ increases the carbonate hardness of the water as well as the pH. An optimal KH is above 6°A and always below GH. Rainwater lowers the KH. Too ...

View full details
Original price €10,45 - Original price €10,45
Original price
€10,45
€10,45 - €10,45
Current price €10,45
Original price €20,95 - Original price €20,95
Original price
€20,95
€20,95 - €20,95
Current price €20,95

Mineral+ Control 1KG - Increases and Stabilizes Water Hardness - Air-Aqua

Mineral+ Control is a combination of essential minerals that together ensure a good mineral balance in the pond. For the growth of aquatic...

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Original price €20,95 - Original price €20,95
Original price
€20,95
€20,95 - €20,95
Current price €20,95
Original price €34,60 - Original price €34,60
Original price
€34,60
€34,60 - €34,60
Current price €34,60

Mineral+ Control 2.5KG - Increases and Stabilizes Water Hardness - Air-Aqua

Mineral+ Control is a combination of essential minerals that together ensure a good mineral balance in the pond. For the growth of aquatic...

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Original price €34,60 - Original price €34,60
Original price
€34,60
€34,60 - €34,60
Current price €34,60
Original price €62,95 - Original price €62,95
Original price
€62,95
€62,95 - €62,95
Current price €62,95

Mineral+ Control 5KG - Increases and Stabilizes Water Hardness - Air-Aqua

Mineral+ Control is a combination of essential minerals that together ensure a good mineral balance in the pond. For the growth of aquatic...

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Original price €62,95 - Original price €62,95
Original price
€62,95
€62,95 - €62,95
Current price €62,95
Original price €115,45 - Original price €115,45
Original price
€115,45
€115,45 - €115,45
Current price €115,45

Mineral+ Control 10KG - Increases and Stabilizes Water Hardness - Air-Aqua

Mineral+ Control is a combination of essential minerals that together ensure a good mineral balance in the pond. For the growth of aquatic...

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Original price €115,45 - Original price €115,45
Original price
€115,45
€115,45 - €115,45
Current price €115,45
Original price €241,45 - Original price €241,45
Original price
€241,45
€241,45 - €241,45
Current price €241,45

Mineral+ Control 25KG - Increases and Stabilizes Water Hardness - Air-Aqua

Mineral+ Control is a combination of essential minerals that together ensure a good mineral balance in the pond. For the growth of aquatic...

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Original price €241,45 - Original price €241,45
Original price
€241,45
€241,45 - €241,45
Current price €241,45
Original price €162,70 - Original price €162,70
Original price
€162,70
€162,70 - €162,70
Current price €162,70

Minerall-In-One 10Kg - Blend of natural minerals

Air-Aqua

MinerAll-in-One is a blend of natural minerals. This special mixture of minerals ensures a good balance in your pond, limiting the growth of algae ...

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Original price €162,70 - Original price €162,70
Original price
€162,70
€162,70 - €162,70
Current price €162,70
Original price €28,30 - Original price €28,30
Original price
€28,30
€28,30 - €28,30
Current price €28,30

Minerall-In-One 1Kg - Natural Mineral Blend - Air-Aqua

MinerAll-in-One is a blend of natural minerals. This special mineral mix ensures a good balance in your pond, minimizing algae growth. MinerAll-in-...

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Original price €28,30 - Original price €28,30
Original price
€28,30
€28,30 - €28,30
Current price €28,30