Poll: Do you use GAC?

Discussion in 'Reef Aquarium Discussion' started by dbl, Feb 13, 2018.

?
  1. 24/7

    367 vote(s)
    54.8%
  2. Once a week

    5 vote(s)
    0.7%
  3. Once a month

    43 vote(s)
    6.4%
  4. Never

    91 vote(s)
    13.6%
  5. Only when "needed)

    164 vote(s)
    24.5%
  1. dbl

    dbl It Takes Less Energy to be Nice Staff Member Team R2R R2R Supporter Reef Squad Leader R2R Excellence Award Partner Member 2019 Partner Member 2018 Reef Tank 365 Build Thread Contributor Article Contributor

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    Yesterday's poll looked at the use/frequency of using GFO. Thought it might be interesting to see who uses GAC on their frequency.
     
    DSC reef and WWIII like this.
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  2. nautical_nathaniel

    nautical_nathaniel Indecision may or may not be my problem. R2R Supporter Reef Squad Leader R2R Excellence Award Build Thread Contributor Article Contributor

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    I have a reactor and carbon on standby for whenever I do anything in my tank that I feel warrants the use of a little carbon, such as fragging my leather coral. I do weekly water changes so I feel like running carbon in addition to that would be a waste of money.
     
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  3. madweazl

    madweazl Valuable Member R2R Supporter Build Thread Contributor

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    I run GAC on a daily basis and replace it every two weeks. I've never used GFO.
     
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  4. LadyMac

    LadyMac Well-Known Member Build Thread Contributor

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    I have a bag of carbon in the sump. I just started to use it and it seems to work well. Will change every two weeks. I’ve looked into a reactor but for the price, a bag stuffed in the sump works.
     
  5. 4FordFamily

    4FordFamily Tang, Angel, & Wrasse Addict Staff Member Team R2R R2R Supporter R2R Excellence Award Partner Member 2019 Partner Member 2018 Build Thread Contributor Article Contributor

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    Always, I rinse it well to reduce HLLE risk (dust is a leading cause as we have learned).

    I also like it as a buffer for any nasties that get in!
     
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  6. zachxlutz

    zachxlutz 120 Gallons of FUN R2R Supporter Partner Member 2018 Build Thread Contributor

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    BRS reactor running 24/7. Change it out monthly or so. Probably not frequently enough but hey... what are you gonna do?
     
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  7. Mccool

    Mccool Active Member Build Thread Contributor

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    I do a water change every weekend. When I do, I'll run some carbon in a hang on the back filter for a day just to clear the water up as I have no mechanical filtration running normally.
     
  8. DSC reef

    DSC reef Coral wasted R2R Supporter Reef Squad R2R Excellence Award Partner Member 2019 Reef Tank 365 Build Thread Contributor

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    Always have a bag of chemipure blue in the sump, 24/7 GAC
     
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  9. sfin52

    sfin52 Valuable Member

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    I run it all the time I change it every 4 weeks. I have four bags of it in my filters so every two weeks two bags are changed.
     
  10. sfin52

    sfin52 Valuable Member

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    That is great to know thanks for that little tip. I always rinse first but didn’t knot it can cause hille
     
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  11. cracker

    cracker Valuable Member R2R Supporter R2R Excellence Award Build Thread Contributor

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    I have a reactor on the shelf also. I run some in a bag sometimes . Could never really see any difference .
     
  12. Pongo

    Pongo Active Member R2R Supporter

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    I keep a bag of GAC in the sump right next to the the return pump intake 24/7 and change it every 4 weeks.

    Are there any theories that using GAC causes problems?
     
  13. Mccool

    Mccool Active Member Build Thread Contributor

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    I've read a few articles linking HLLE in tangs with excessive carbon use. No other problems im familiar with
     
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  14. zachxlutz

    zachxlutz 120 Gallons of FUN R2R Supporter Partner Member 2018 Build Thread Contributor

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    Theoretically, GAC can cause corals to be burned by excessive lighting if the use of GAC causes the tank water to become far cleaner and less yellow than before use of GAC.
     
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  15. van7271

    van7271 Active Member

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    I use carbon 24/7 and change it every 3 weeks.
     
  16. tankstudy

    tankstudy Valuable Member

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    I run GAC 24/7.

    It reduces the risk of me coming in contact with something possibly harmful being released by my inhabitants and at the same time, if I were to introduce any harmful chemicals when working in the tank, GAC has me covered.
     
  17. rstrann

    rstrann Active Member

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    I've had issues in the past that made my tanks a little too nutrient poor, so now I only flip the reactors on for a few days a month.
     
  18. yoteru

    yoteru Member

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    For the people who do not use it all the time. Does the water in the reactors become stagnant if sitting for too long?
     
  19. zachxlutz

    zachxlutz 120 Gallons of FUN R2R Supporter Partner Member 2018 Build Thread Contributor

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    Activated carbon was one of the causes of your nutrient poor tank?

    At times, I've had a second reactor on my tank to run GFO (no longer using GFO, though), during the times it was offline with no media in it, I just kept a slow flow running through the reactor off my manifold. I wouldn't want to let it sit with stagnant water in it.
     
  20. Sully32

    Sully32 Member

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    I only run it for a day or two after water changes.
     
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