I know the Aquapod is 20" across the top. It's not looking good. Angie and I got to talking this morning and we were thinking about T-5's because I really want to do an anemone. But we are thinking that there may not be enough lighting with jus thte PC lights that are built in. If anyone has heard about someone doing this I would be greatly appreciative. My only other option is MH lighting. Don't quite have the $$$ for that.