| | Re: Automatic water change system design DIY
Thats why I've never liked the fill to have it overflow water change systems.
a much better option is have a stand pipe of a valve in your plumbing so the water will drain down to that point. then you refill. Its what I run on my discus tank. I have a stand pipe that is 12" below the water line on a valve. I just turn the valve, out goes the water.