Posted: Thu Jun 03, 2010 12:58 am
I've had a similar problem. I went with one brand that had a green one and attached to the faucet, lasted about a year and snapped. Bought a new one from Petsmart from a differant vendor it was gray. Wish I could say how long it would have lasted naturally, but my move broke it.
Haven't thought about trying to build one, basically its a valve when open causes a suction and pushes water trough it and sucks out of the tank. When closed it puts water back in.
All I Want in Life is to be Happy!!