how large is your tank? that'll contribute to the head pressure. 50 gallons of water trying to force it's way against your pump can be almost 3' of head alone.
if you already bought it, do an experiment. go to the bathroom, hook a hose to the pump, and raise a 5 gallon bucket up the same height as your tank. then time how long it takes to fill the bucket. that's your water flow at the head pressure WITHOUT your tank's water forcing down on the pump. it'll give you a rough estimate if your pump's strong enough to at least get the water to the bottom of the tank at the flow you want.
oh, and if you have a gravity fed overflow at 3/4", then reduced to 1/2", i'd be careful. that can only handle a flow of about 90 gph, since it's gravity fed. and each 90 degree elbow will reduce that flow by 25%
how big IS your tank? is it a nano?
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Last edited by kwirky; 10-18-2006 at 06:09 AM.
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