Ok, so I'm building an overflow box, and before having one, I think they're great. I understand that as long as your return pump doesn't exceed your overflow box rate in
GPH then your ok. The other thing I see from built boxes is that they will not continue to drain water once the return pump is turned off (another great thing). The only thing I dont understand is how the siphon is continued once the power is turned back on.
Are there any specific dimensions I must know of in the construction and placement of the siphon tube or the relation to water level in the tank for this to work properly?
