I seriously need more growing space for my plants. I've already got 2 ten gallons relatively full. So, I was thinking of ditching one ten gallon, keeping the other, and making a terrarium out of a spare 20 gallon tank. It's a 20 gallon "High" tank. The dimensions are: L=24", W=12", H=16"-17". Based on this, I could fit several 4' shop lights on top, but I was thinking 2 would be good enough. That would be about 80 watts, which is around what I have for my tanks, give or take a few watts. Would this make my plants color up as much as they would with 80 watts in a ten gallon? Could I balance the lights on top of the tank without needing to hang them?