Review on Finest Filters Compatible Filter Internal Filters Fish & Aquatic Pets in Aquarium Pumps & Filters by Kellie Rose

I was going to use this in my 20 gallon aquarium but when I opened the package I noticed a very strong chemical smell coming from the foam. No branded filter media I have used in my aquariums has NEVER smelled like this. It persisted even after rinsing (I even tried vinegar solution!) so I decided to throw it away. No amount of savings could bring me to expose my fish and plants to what was inside that sketchy plastic. Attention aquarists!