Cool looking bug.

OK so here are my two ideas for an overflow/drain. Let me know what you think, this will have to run 24/7.

Will a siphon maintain a water level if valved back to less than 100%. Id really like to be able to drain down to 6inches of water if I need to. I will only be able to build one of these, and Id rather build a siphon to keep from breaking my dam with the standpipe. But 6inch pvc fittings arent cheap.