How often should I run carbon reactor?

[JosephM]

I’m working on a 29 gallon reef tank with a 20 gallon sump below. I’m planning on buying a timer for my grow light for the refuge but I’m thinking if I need any other timers. I purchased a reactor for the sump and was planning on using activated carbon pellets. Should carbon be run 24/7 or certain hours or certain days? Any advice is welcome. Thank you!

 

[HB AL]

24/7

 

[polyppal]

Id run the carbon anytime your running the skimmer (i.e. all the time, unless dosing something special or coral amino/foods)

 

[Spieg]

I only run filter carbon when needed (when water color is turning yellow, or if something bad happens in the tank). Typically for a couple of days about every 3 months. Anything more is a waste IMO (not to mention possibly removing desirable elements from the water).

 

[JosephM]

So really whoever’s opinion I take I don’t need a timer...

 

[JosephM]

But keep the opinions coming on how you guys run the carbon. Love to hear them!

 

[polyppal]

So really whoever’s opinion I take I don’t need a timer...

naw, it doesn't need a daily cycle that would require a timer

 

[Spieg]

Timer no... heck I don't even use a reactor, just a mesh bag in the media section of the sump.

 

[Tandy]

I do water change once a month. I run carbon after the first 2 weeks when water starts to get yellow and ugly for about 4-5 day, the next water will take care of whatever from the last 2 weeks.