I've got a 2 gallon hex tank. I've had it empty for a while, had a beta in it years ago, have used it for a QT tank before but not an ideal QT, it's really almost something I'm going to throw away. The non adjustable heater has long since been discarded, along with the "hood" that was incapable of anything other than incandescent(CFL would not fit) I'm thinking of doing something with it, give it one last shot at being useful. It has the stock UGF plate, that I know isn't great for plants. I'm thinking of putting 1 plant, maybe a ground cover plant, and maybe one invert. Thing is, I would like to do it with no light, no heater and if any filter, the stock UGF (preferably no filter) is there anything cheap and easy that will work for this? I can easily get indirect sun for 6-8 hours just having it near a window. I dont mind weekly, or even biweekly WCs, but im not willing to say long term daily WCs are a responsible hobby. Any thoughts?