www.autotopoff.com sells the float switches to trigger submersible pump. The hot water side you won't even need so just leave it capped. A regular sink faucet or ball valve on the cold side.drip emitters I believe are 1/4" so you will just need to reduce the water line accordingly. Sink lines are usually 1/2". There are plenty of threads on water changers Just start reading up. I actually hooked mine up to a lawn sprinkler valve and timer. Instead of having a slow constant drip, Timer goes off at 7pm every night and dumps 70 gallons of fresh water into top of tank. My sump fills up to a certain level and float is triggered pumping old water onto my lawn. There are many different ways to do it.
