Awesome for hang on the back aquarium filters. I cut the pad to fit the filter and it keeps the water crystal clear with regular cleaning. I got the idea from Aquarium Co-Op, it works great.
I use this in every canister I have - does a great job - will buy more to keep in stock.
I highly recommend this item to polish the water!
This poly pad is dense and really polishes the water well. It's easy to use and it to whatever size is needed. Can work for multiple HOB filters.
It has cleared up my water really well! It came quick . Aquarium Co-Op is the best!