HiBlow HP-120 Aeration Kit - 100 to 120 m² Pond - Weighted Japanese Diffusers

This HiBlow HP-120 aeration kit includes everything you need to oxygenate a garden pond with a surface area of 100 to 120 m²: a HiBlow HP-120 air pump with a capacity of 120 L/min, 4 weighted Air-Aqua Japanese micro-perforated diffusers measuring 90 cm, 40 m of weighted tubing (10 m per diffuser), a chrome Aquaforte 4-way manifold with 9 mm outlets equipped with valves, one outlet per diffuser, as well as a 19 mm connecting hose (5 m, to be cut to length) between the pump and the valve and 10 stainless steel hose clamps. The components have been selected by our experts to work together: all you have to do is set them up.

For which pond?

To size an aeration system, our experts use a baseline of approximately 1 L/min of air per m² of pond surface. With its 120 L/min, the HP-120 thus covers ponds of 100 to 120 m². Depth also matters: the deeper the diffusers are placed, the more pressure the pump must overcome and the more the actual flow rate decreases. If your pond is deep, heavily stocked (koi, sturgeon), or at the top end of the range, choose the larger kit or send us its dimensions: we will advise you.

Kit contents

• 1 × HiBlow HP-120 air pump (120 L/min)
• 4 × 90 cm weighted Air-Aqua Japanese micro-perforated diffuser (max flow rate 30 L/min, 20 L/min recommended)
• 40 m of weighted and floating 9-12 mm air tubing (9 mm internal diameter, 12 mm external diameter), i.e., 10 m per diffuser
• 1 × Aquaforte 9 mm chrome 4-way manifold
• 1 × 19 mm connecting hose (Oase 3/4" spiral hose, 5 m, to be cut to length) between the pump and the valve
• 10 × 11-16 mm stainless steel hose clamps to secure the weighted tubing to the valve and each diffuser

Why a HiBlow pump?

HiBlow pumps propel air using an electromagnetic diaphragm mechanism: no oil, no lubrication, and very little vibration. They are designed to run continuously and are used by Japanese koi breeders. The HP-120 delivers 120 L/min of air. The HiBlow HP range is between 31 and 45 dB according to our pump data sheets.

Air-Aqua diffusers combine an AISI 316L stainless steel bar with a micro-perforated porous hose. Thanks to the shape of the support, the hose "floats" above the bottom: it creates a fine diffusion of bubbles and water agitation without moving.

Installation

1. Install the pump dry and protected, on a stable and ventilated surface, preferably above water level. If it must be lower, add a non-return valve. It must never be submerged.
2. Cut the 19 mm connecting hose to the required length and connect it to the pump outlet (Ø 18 mm) and the chrome valve inlet (Ø 20 mm). The assembly is simple: pump → 19 mm hose → chrome valve → 9 mm weighted tubing to the diffusers.
3. Cut the weighted tubing into 4 lengths of 10 m and connect each valve outlet to a diffuser. Tighten each end with a stainless steel clamp.
4. Distribute the diffusers at the bottom of the pond, away from the suction of the filtration pump.
5. Plug in the pump, then balance the bubbles from one diffuser to another using the valves on the manifold. Avoid closing several outlets at once: a circuit that is too restricted increases the pressure in the pump.

Winter aeration

In winter, raise the diffusers to mid-depth rather than the lowest point: this maintains a layer of softer water at the bottom where the fish rest, while still maintaining an exchange zone with the air.

Maintenance

The pump requires no lubrication. Regularly check the foam of the air inlet filter and clean the diffusers if the bubble flow decreases. Diaphragms and valves are wear parts: our experts recommend replacing them approximately every 5 years. For the HP-120: HP-100 / HP-120 diaphragm and valve set or HP-100 / HP-120 diaphragm set. All parts are grouped on our HiBlow guide.

Comparison of HiBlow aeration kits

Free delivery: this kit exceeds the €149 threshold, so delivery is free.

Any questions before ordering? Send us the surface area, depth, and population of your pond: support@foudebassin.com or +32 10 86 03 54. The Foudebassin team, experts in aquatic environments since 1998, will answer you.