overlfow

I bought a used 75g rimless from a buddy of mine and it came pre drilled with the overflow installed, I cleaned the tank up and cleaned the overflow and inspected the seals, everything looks good I placed the gaskets back in the proper order between the wier and tank and between the nut and...

Looking at the Eshopps Eclipse Internal Overflow for a nano build, anyone have any experience with this overflow?

I recently installed one of these units and there are some definite flaws as follows: 1. The outer box is not high enough. If you run the overflow at a safe level (one that doesn't spill onto the floor) the syphon lines will suck air and make noise. 2. The system does not include a gate valve...