The M25 gravity return FB unit will cater for heavy stocked ponds up to 2,500 gallons (11,250 litres), and is best served from a high pressure pump offering around 470gph (lsuch as Blagdons Amphibious P2000) – with final operational flow rates of around 250gph. This unit is approx 600mm high (24”) with a 110mm (4”) diameter core containing 3kg of silica sand, together with standard 38mm (1.5”) inlet pipe manifold including a Cloverleaf Side Valve on the inlet side, together with a non return valve. Outlet/gravity return is for 50mm (standard 2″) rigid pipework. The M25 will support up to 50kg (110lb) of fish load.
The Cloverleaf Fluidised Bed Type M25 is well made – nicely finished and of course they work very well. They are easy to install and control and they have their own built in slide valve to enable you to set the desired flow rate.
If you need that additional biological filtration to enhance your own system without having to increase, or replace your existing filtration system then these Fluid Bed Filters are for you. However, please bear in mind that they are recommended to SUPPLEMENT your existing biological system.