[trenac]

Roy, I have the 12G Nano cube w/ single 24 watt bulb. One problem I have found is the temp in the tank raises up to 84-86 degrees in the summer. I cracked the hood open a bit with a plastic strip which helped a bit. I have never had a problem with the sponge prefilter clogging, I clean the sponges out monthly.

 

[trenac]

Roy... I'm sure that it will get hotter, I guess a lot depends on how cool that you keep your house during the summer. I have heard that some people blow a fan across their tops and this keeps the temp down. I'm thinking of turning mine into a reef tank.

I have not had any fish get over the wall but I've had a Amano & baby Cherry shrimp climp over the wall. They lived but where very difficult to get out.