I've been going spare trying to talk myself out of one of these tanks. But I've decided that next dollar per gallon sale, I'm going to take the plunge, retire my 20 long, and move some of my other stock around. Yesterday, I sourced out a good price on some sand to supplement what's in the 20L. Today, I bought a stand that will be delivered in a week or so. I have lights and filters. I keep reading that the glass tops have to be tank specific to fit correctly. (Have cats. Must have a lid.) So that will be put off until I know whose tank I'm getting. Dang. I'm kind of excited/relieved now that I've decided to go through with it.