I have an extra 1.5 gallon tank sitting around that is empty of any life. It has gravel as substrate, HOB filter for up to 10 gallons and no lighting. I have 2 other tanks...a 10 gallon community fresh water and a 55 gallon salt water. So I would like this small tank to be a fresh water invert tank. I would like something unique. Like maybe a community of dwarf frogs...can they reproduce? Maybe a shrimp tank...which type? I kept ghost shrimp in my 10 gallon with no luck of survival. Would a blue lobster be a good choice? I would really like this tank to thrive so any info I can get or opinions would be helpful. Would I need to get a light and a heater? Would a heater be necessary?