Tropical Fish Keeping banner

betta filter carbon

  1. Beginner Freshwater Aquarium
    I have Penn Plax Cascade filter with spray bar in my Betta tank. It has sponge so I took out the cheap carbon to use two sponges so I could rinse one out in tank water once in awhile and still have the other working and not create a cycle. Now I have purchased some good carbon and I am thinking...