carbon

Daddyrawg

Member
DO you guys run carbon 24/7 then change out the carbon when neeed?

or do you run carbon for a couple days then turn it off until needed again?
 
I run carbon 24/7 in my sump and remove only if dosing - carbon running in your tank non stop can really Keep your water polished. I change it out as needed.
 
24/7 here.. Haven't changed it in a while though..
I originally started it just because I wanted to have potential protection from coral toxins effecting other corals if they ever get crabby..
I haven't noticed any changes in the tank that I can attribute to running carbon.. Of course TOC content is very hard/expensive to measure..
 
DO you guys run carbon 24/7 then change out the carbon when neeed?

or do you run carbon for a couple days then turn it off until needed again?

The problem with GAC is that nobody really knows how long it lasts, so you might want to just pick a date and replace the carbon then. Just as an example a lot of people will change their carbon once every 3 or 4 weeks regardless of whether it's still working or not.
 
As stated above , without testing, no way to tell how long the stuff lasts.
Carbons capacity for chemicals depends on many things. Size of the bed. Pore size of the carbon. The molecular weight of the chemical being removed, the concentration of the chemical in the stream being treated, other chemicals and debris in the treated stream, operating temperature of the system and polarity of the chemicals being removed all affect the life of a carbon bed. I run it 24/7
 
I replace mine roughly once every 6 weeks or so, or sooner if I notice the water getting any kind of tint to it. Fresh carbon makes water pretty colorless, so it's pretty easy to tell when it needs to be replaced.
 
24-7, changed every 30 days.
Why every 30? Seems like a good number...
One thing for sure, it's ability to absorb decreases with time, so I want to play safe.
 
I run carbon 24/7 in a reactor, I change it about once a month. I do my water changes into a white 5 gallon bucket. Once I notice the water has a bit of tint, or that "low tide" smell, I change my carbon. Which is usually about once a month.
 
Ran it once after a flat worm treatment.
Tangs developed HLLD and lost a nice Blue tang that jumped one night.( and no, it wasn't the Flat worm Exit, it was the carbon)
I wont use carbon unless it's absolutely necessary.
And it would be a small amount for a limited time.
 
Ran it once after a flat worm treatment.
Tangs developed HLLD and lost a nice Blue tang that jumped one night.( and no, it wasn't the Flat worm Exit, it was the carbon)
I wont use carbon unless it's absolutely necessary.
And it would be a small amount for a limited time.

Just out of curiosity how long did you run the carbon for? From what I understand about HLLE is that it's progressive, meaning it doesn't just happen overnight so to say. I may be wrong though..
 
Just out of curiosity how long did you run the carbon for? From what I understand about HLLE is that it's progressive, meaning it doesn't just happen overnight so to say. I may be wrong though..

I have a 90 gallon display with a 70 gallon basement sump and 20L refugium.
I ran a filter sock on the overflow return to the sump. It had about 3 cups of activated carbon in there.
Noticed both tangs, blue and yellow acting funny within a day. Clowns started to act funny as well. This was after a large water change as well.
Tangs showed signs of HLLD 2nd day and progressively got worse.
Figured it was the released"toxins" from the flat worms.
Blue Tang jumped one night. :(
Removed carbon.
Clowns improved with in 1/2 day.
Yellow tang took a week or more to recover. Now back to looking great again.

I've been at this a reefing stuff a while. Seen many instances of the same thing happen after using carbon. Maybe I used too much, don't know.
Only know that next time,if any, water changes will do.
Just my 2 cents.
 
24/7 though a reactor. Changed monthly. Previously mild HLLE on tangs after change. Since (last year 7 years), rinse it before it goes into reactor, drain reactor to a bucket until water is clear, and reactor (with GFO reactor) drains into a sock. Never an issue since and it is never low tide [I like that lol]
 
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