i hope not because i just removed all the carbon from my sumps last week i find that it takes up to much space and i do 50% water changes every week so i dont see the need.
wrong! water is a must, even if the fish can breath air it will need a mist every once in a while.Will Hayward;3243328; said:Nothing is a must
zennzzo;3243283; said:When it has the potential to "give back" the nasties it originally filtered out, and with no clear cut info on when this generally can occur, It just doesn't make good sense to use it for the marginal performance it may offer...
still doesn't give you any time frame for replacing...velanarris;3246978; said: