yea the top only view kinda sucks, which is why it tends to be used more for larger fish such as cats, rays and the such. but if you like the idea of setting up a cichlid pond out of one of those kitty pools from walmart that aint a bad idea. i bought one for my dogs and it was only 15bucks and id say prolly held anywhere between 100-200 gallons so go for it, have fun with it andpost some pics. if its indoors just watch for evaporation causing some damage.