Shark Bead 35 - Pressure filtration for ponds up to 105M³ - Aquatic Science

The Shark Bead is a pressure filter providing mechanical and biological treatment of ornamental or swimming pond water. It contains a substrate composed of floating plastic beads, whose specific shape allows bacterial overdevelopment. The "good" bacteria will settle around these beads to form the biofilm. This bacterial development prevents waste, even the finest.

• Suitable for ponds of less than 35 m³ with fish (30 adult koi)

We sell this filtration system as a complete kit with choice of UV device. To be discussed by email at support@foudebassin.com

Water enters the tank via a pump. It then rises through the balls colonized by bacteria, then passes through the strainers and progresses to the multi-way valve and then returns to the pool. The high-flow booster, mounted on a non-return valve, is useful when cleaning the filter.

• How does mechanical filtration work?

Decantation removes the largest suspended particles (>50μ). The finest particles (>20μ) are retained in the beads thanks to the network created by the bacterial biofilm. This is called bio-absorption. This network developed on a microscopic scale retains the majority of waste, even those invisible to the naked eye.

• How does biological purification work?

The bacteria growing on the surface of the beads form a biofilm that transforms toxic nitrogenous waste (ammonia, nitrite) into nitrates. When mature, this biofilm develops into a compact "magma". Biological purification is then optimal and the denitrification necessary to combat algae can take place. Filtration substrate for Shark Bead (12.5 Kg/25L)

Centrifugal prefilters
The polyvortex is a real water "dust collector". It reduces the maintenance of the main filter, which will need to be rinsed less frequently and will only require a few liters of water.

The device works on the principle of centrifugal filtration. The water is sent under pressure into multiple “hydro cyclones” that generate a significant centrifugal effect. The sediments settle in the center of the vortex and accumulate in a transparent collector cleaned by simple emptying, without any other intervention on the operation of the filtration. The clean water rises to follow the original path to the main filter. The polyvortex is placed directly behind the pump, using the pressure to create the mini vortices. It consumes very little water and does not need to be powered by electricity.

• Polyvortex 63 mm inlet and outlet connection.
• The drain is 1'' to be glued (F 32 mm or M 40 mm adaptable).
• Flow rate: max. 30 m3/h – Min. 3 m3 /h

How to ensure effective pressure filtration?
To do this, there are 5 essential points:

1. The pump: provide a pump to ensure good circulation and compensate for network pressure losses
2. Effective pre-filtration with a polyvortex as shown in the diagram and on page 39. Please note that this pre-filter, which is very effective in eliminating waste down to 0.05 mm, can very quickly become clogged in the event of heavy pollution.
3. Bacterial and mechanical filtration thanks to the Shark Bead filter
4. UV filtration to ensure water transparency and the elimination of germs and algae
5. Hydraulics, to have good hydraulics, it is necessary to pay attention to the following 3 points:
1. Provide an adequate number of suction and discharge points corresponding to the flow rate
2. Position these suction and discharge points so as to ensure good water circulation.
3. Use pipes with a diameter suitable for the flow of water to be transported

* Beyond the recommended nominal volume, confirmation from Aquatic Science is necessary before validating the choice of filtration.

** Each skimmer, drain, discharge must be supplied individually to limit pressure losses and allow regulation at the distributors and collectors. For discharge nozzles, in order to achieve flow rates greater than 5 m3 /h, it is necessary to either remove the ball joint or choose a nozzle sized for a higher flow rate.