SamAxolotl
Member
I'm putting my old axolotl filter (5 or 10 gallon filter, not sure) into my fish tank and getting a new 20 gallon sponge filter for my axolotl. My question is: how do I do this without losing all the good bacteria in the sponges?
side note: anyone know of some good fish (specifically goldfish) forums?
side note: anyone know of some good fish (specifically goldfish) forums?