- Reaction score
Adding the neutral regulator is just another addition to the chemistry issue. She is saying to remove the carbon for one of two reasons:Susan McGarry said:I put the air stone in at midnight last night. Today it is still 6.4. The girl at petsmart suggested I either take off one of the filters or take out the carbine from one of them? They sold me neutral regulator but after reading reviews I don't think I should use it.