i had 24 jack dempseys ready to go and I was about to put half of them into a 180 gallon. Unfortunately, my school upped the tuition and I couldn't buy the tank. Otherwise, I would have had a planted dempsey tank!! I was looking at crypts, etc. protected from digging with rocks, floaters, moss, etc. to allow the plants to be "movable" so that the dempseys could rearrange some plants to their pleasure.