I have a AC110 HOB filter on my tropical freshwater 55g tank. I read some where that I could re-use the foam over and over and never replace it. Is this true? Thanks in advance for your assistance.
Just rinse it out in tank water and re-use until it A) falls apart, B) water won't pass thru in spite of rinsing, C)You have a nitrate problem and can't get it to drop.