GRANDEHARIWAKE
Koi Lover
Aug 15, 2006, 8:52 AM
Post #2 of 2
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Re: [eps] Help with Hayward Filter
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Hi,
We just bought a 24" hayward filter for the same idea with the same type of media. Only we filled a quarter of the tank with pool filter sand and a quarter, about 2 cubic feet, with sinking bio media. It's been running about a week, and so far with the help of a U.V. light, the water clarity has gone from 25% to 100%. During backwash, only green particulates are released until the water comes out clear. Then we rinse, and the same thing happens till its clear. But to explain the lack of solids, we have a prefilter, which is basically a pool cartridge filter without the cartridge, but with foam wrapped around the cartridge holder. It helps to trap large-medium sized particles before the sand/bio filter. Also, these filters are plumbed with a parallel bypass, which helps when the valves are open/closed the right way to direct more flow to the backwash.
One other thing you could try is connecting an airline to the drain of the sand filter. Tee the drain off with two ball valves on each end. Then, on one end put a check valve and a fitting to your airline. While backwashing, let the air break loose the solids in the media bed.
Hope I was of some help.
Ask me more questions you have about this system, as it seems to be working for us.
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