Hey just wanted to let everyone know about this filter. I think i got it at walmart a while back when i needed a filter quick when mine stopped working. Anyway ive been using it on a 10 gallon tank i set up and i came home to find about 1.5 gallons of water on my floor that had leaked out of the filter. Apparently when the filter pad gets the slightest bit clogged the water level gets so high behind it and flows out over the back and sides. And yes the tank was leveled correctly. I would not recommend buying this even if it is cheap.