I was not planning on using the undergravel thing anyhow, I was just going to change the water more like I do now with my betta tanks. :)
My main concern is for my live plants.
Right now I have three betta tanks, two 1 gallons, and a 1.7 gallon. All three tanks have a anubias and a lump of java moss. The 1.7 gallon is a older model of the one from walmart, instead of the tiny 7 watt bulb it has a larger 15 watt. Not only does it keep the water nice and warm, but the plants in it seem to be growing fast and beautiful.
My two 1 gallon, however, their java moss are not growing and their anubias plants are coloring dark and hardly grow. The anubias also turns it's roots up toward the surface as if they want more light. :/
I want to stay with the smaller tanks but I need some that keep my plants healthy.
My original choices were the two tanks I posted on this thread, and maybe this one. Though all say 7 watts. :/