MartyMA
Aquarium Advice Activist
I have not had to change out any part of my filter yet. It is only been running for two months. However, I am getting confused about if or when the three components (foam, carbon and biomax) should be changed and if this Purigen stuff is something I should have instead of carbon. I understand that the foam can stay until it is falling apart. Carbon will loose it's effectiveness at some point I think and maybe this is where purigen might come in? Are carbon and purigen just detoxifiers? One more thing...does the biomax product do something other than allow for bb to grow? It would seem that all three components would allow bb to reside comfortably. As always, any imput is appreciated.