Super Cheap sump
I'm working on the theoretical design of a really cheap sump for my 75g tank. I'm looking for advice as to what i should do.
Here's my basic idea:
2 fish specimen containers epoxied together to hang on the edge of the tank. The interior container will have slits like most professional overflows to allow water in, and will have the siphon tube siliconed into place. The exterior container will be split in 2 by a small piece of acrylic, allowing a reservoir to keep the siphon, and the excess spills into the second half to drain to the sump.
The primary vessel will be a 15g tank with a small semi-sealed "filtration section" where the overflow falls into. The separator (more acrylic) will have slits at the middle so that the filtered water will flow into the "treatment section" with minimal surface agitation. In the "treatment section", the water will be heated, inundated with CO2, and otherwise treated before entering a powerhead.
-Flood-proof failure... If the pump dies, the water should stop flowing before my apartment floods
-Sealed splash zones
What am i going to need to remember? What is going to go wrong with this build? What are good equipment to get?