How long to run carbon in filter

[Amphiprion]

Well, the carbon itself will become exhausted--so I would replace it reasonably often. Is it refillable?

 

[kay-bee]

...The effect of carbon on an already excessive amount of trace elements found in salt mixes and foods will hardly be an issue....

:iagree:

My agreement is based on the results I have seen with my corals after running copious amounts of carbon for the last 6 months or so in my reef tank.

 

[cav]

I ran it 24/7 in my nano and my corals were fine. I ran smallish amounts and changed it every 2 weeks