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Re: How does a sump work???

Subject: Re: How does a sump work???
by TheDragonLord on 19/8/2006 21:04:29

if you drill a hole in the return pipe just below the surface of the water it'll cut out any syphon action from that as well, your sump shouldn't be more than 4/5ths full when the tank is full up to the bottom of the weir/overflow to prevent any flooding risk