I just decommissioned by 1ft tank so I decided to do a mini review of the internal filter I've been using for it.

It's only suitable for a 1ft cube tank. It has quite a strong output which I'm happy with, as my 1ft cube was heavily planted. It comes with a sponge and a bag of activated carbon (not shown in the pictures) inside, plus the assorted accessories and the manual. construction is solid and parts fit well.

There are two compartments inside the filter. One for the sponge and the other is a closed enclosure, good for a few pieces of ceramic rings or Biohome or a very small bag of Purigen. You have 4 small suction cups at the back, which actually do the job unlike some filters I've bought in the past. They stay on strongly. However, the bottom two suction cups are detachable and can go missing if you're not careful.

It's quite a silent filter too, except that sometimes you can hear the motor sounds. I solve that by switching off and on the power quickly. Somehow that solves the problem.