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Gravel turning green

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drtrash

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Recently, something has shifted causing gravel to get green. Assuming algea. Tank is mature, no hair algea, some sprigs of bryopsis. Rarely do water changes but have done 20% in 2x in last month (100 gal tank), went black for 3 days, turned off t-5s and cut led to 30%. My guess is a chemistry issue or green is cyano not algea, not matted or hairy. Di cartridge is showing 0 on meter, but could be some micro element. Not sure on what to try next. Dropped feeding too 2x a week, low fish load
 

BighohoReef

A reefer in need is a friend indeed!
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What are your over all parameters? How mature is your tank? Do you have a picture?
 

vetteguy53081

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Its algae and a few things can cause this:
- Excessive white lighting or intensity
- Nutrients high from feeding
- By any chance is tank at or near a window?
 
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drtrash

drtrash

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Not near window, kessil led set at 18k color only at 30% intensity, was at 50% with 4 t-5's, chnaged lighting and only feed 2x per week for a month and no change, looks like dino but green
 
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How often do you have some type of algae issue?

  • Constantly Something

    Votes: 165 43.7%
  • Every Month

    Votes: 19 5.0%
  • Every Few Months

    Votes: 46 12.2%
  • A Few Times A Year

    Votes: 51 13.5%
  • Once A Year Or So

    Votes: 42 11.1%
  • Every Few years

    Votes: 17 4.5%
  • Never.....(are you lying?)

    Votes: 22 5.8%
  • Other (please explain)

    Votes: 16 4.2%

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