Aneamals
Aquarium Advice Activist
Wow, I had never heard of the Purigen. I just googled it, and I'm impressed. Too bad I already bought a box of activated carbon LOL. I'll have to use it up and get the purigen later.The reason the AC's and C's are "better" is you can make your own filter bags (use purigen instead of carbon etc.) because the chemical filtration is just a bag, any bag with "stuff" in it will work, and also it is easy to remove this bag for medical treatments without removing the other mechanical and biological filtration media.