I recently got a small Hagen Tropiquarium from craig's list (I'm from the Bay Area) for something like $15. In case you're not familair w/it, the tank comes equipped w/a fluval 2 filter, a heater and one flurescent light tube all in one -- meaning, there's only one plug for the wall that everything's connected to.
So I wanted to make this my planted tank, and succeeded in retrofitting this nano tank (10, 12 gal?) w/two screw-in mini compact flurescents via an extension cord and two little one-inch things that have a bulb-screw-place on one side and a plug on the other. Add some mylar (inside of doritos bag), some aquarium sealant and close the lid (to make the entire thing mositure-proof) and voia!! a very cheap tank retrofit.
But the problem is that as I was messing w/the hood, I realized that all the wiring and electrical stuff for the flighter, heater, and lights were not accessible, at least not to me. I unscrewed everything I saw, but I wasn't able to access the "guts" of the tank. This is PROBLEM b/c the heater is out of whack -- it's always on, which is what's killed or damaged almost 75% of the plants I had in there. It was up to something like 92 degrees (F)!!!
I'm thus wondering ... does anyone have any experience w/this? I'm thinking I can just rip out the heater and put aquairum-sealant on the cut, but i'm not sure if this is safe. Right now I just have the heater outside of the tank in a bucket, but it looks icky b/c it's still connected to the aquarium hood. I know this is an old tank, but ANY help would REALLY be appreciated. I've spent a lot of work on this tank ...