Is the Charcoal really a waste with the AquaClear Filters? We have 3 2 20's and a 50. One of the 20's has had the same sponge since January. I am worried about changing the sponge with a cycled tank.
How often does the charcoal need to be replaced?
Curious what is the best way with the sponge n stuff?
Squish the old sponge in with the new sponge? And let them run together?
Take the charcoal out and use 2 sponges so one is always 'cycled' at any time?
Thanks
Jana
How often does the charcoal need to be replaced?
Curious what is the best way with the sponge n stuff?
Squish the old sponge in with the new sponge? And let them run together?
Take the charcoal out and use 2 sponges so one is always 'cycled' at any time?
Thanks
Jana