Alright, I pretty much just created an account so that I could ask about this. I've tried Google and I've tried using forum searches and I haven't turned anything up. It's hard even to know quite what to look for.

I've got a glass twenty-gallon tank with a screen top containing yellow/fire-bellied hybrids. The screen top consists of two screens set into tracks that slide back and forth. The tank contains maybe four inches of water and I've got a small submersible filter in there (who knows how much good it is doing, there is still a lot of substrate in the water from when I first got everything set up) and a little pump that is pushing water to the top of a hunk of driftwood for a waterfall.

Question: How does one route electrical cables into such a tank without leaving a gap through which frogs might escape?

I mean, the cables just exited out the corner of the tank and there was a gap where the lid closed against them. I didn't think it was wide enough to be an issue, but then a frog escaped and was never seen again, in spite of thorough efforts to locate him. So one of my housemates made a shim out of cardboard and duct tape and we secured that to the side of the tank and jammed it into the gap. This doesn't totally solve the problem, but the gap where the lid closes against the shim is smaller than the gap where the lid closed against the cables. No way could a frog slip through there. Or could one? In the last forty-eight hours, we've only been able to locate two of three. I poked my fingers into all the hidey-holes I could think of today while doing a water change and cleaning the filter out and still only turned up two frogs.

The only thing left that I can think to do in order to prevent the escape of the remaining two frogs would be to tape the shim down over the gap, rather than putting it inside the gap. But surely there is a more sophisticated way to approach this than taping cardboard into place? How are folks intended to route cables into tanks with screen tops? Am I totally missing something?

Maybe I should have just stuck with fish. Fish don't climb.