Carbon or not ?

[urbanhellfire]

The only bad thing I can think about running carbon in a tank might be if your tank likes dirtier water.

I have a 33g soft tank that will not let me run carbon on it, it I do try everything looks off, but with my 110g I run carbon 24/7 and the soft frags that are in there are taking off.

Just make sure it gets changed out sooner rather than later.