What can I do with two one and a half gallon tanks? They have an undergravel filter setup, powered by an airstone, and a hood with a halogen light. I had kept bettas in them but moved them to their own divided 10 gallon tank. My White Clouds have spawned. Could I maybe grow out a couple of the fry in them? What can take colder unstable water temps? Maybe I could grow some food in it? Thanks all.