Before buying these filter inserts, I was struggling to keep our 20 gallon tank clean. Algae would start to build up after a few days. The day after putting one of these bags in the filter, I was astonished at how crystal clear the water was! Not only that, we were having an issue with white mold starting to grow in the tank and the day after using this, it was completely gone! And guess what its been about two weeks and the water is still crystal clear! Im seriously amazed and so happy because I was getting really discouraged and was ready to give up being a fish owner. So happy.
Rating:
[5 of 5 Stars!]