Pet Faves Seachem Purigen Organic Ultimate Filtration Resin 100ml (3 Pack) - Aquarium Fish Tank Filter Media for Freshwater & Saltwater with 10ct pet wipes

Easy to use, and good addition to my filter.

great for clean crystal water in tanks

Works as stated. Should be cheaper .

I use these on a regular basis in addition to my regular filters based on the recommendation of our fish store.

Great cleaning for aquarium

It’s hard to check to see if this product is working. However, my water seems to be clearer after using it. The only thing I don’t like is it seems to limit the water flow significantly.

Use one in every tank

Used to keep saltwater tank clean