I have my 15 gal hex cycled and currently is houseing 3 guppies and 4 peppered corys. I am unsure of what else to do with this tank without over stocking it. I kind of have an urge for a pleco but I dont know if there is a small enough species. I also have a 10 gal with a male betta and a mystery snail(messy little thing). I want to add something else but unsure of what to do. Any suggestions would be appritiated!