• For a Limited Time the R2R Partner Membership is NOW OPEN! Get some cool swag and chances to win part of over $20,000 in prizes! Click here for more details

AI light spectrum


New Member
View Badges
Aug 6, 2020
Reaction score
San Mateo county
Hi, I am new here and am hoping someone can help with my lighting questions. I purchased a 10g nano reef tank a year ago. My corals are not doing well and I think lighting may be the issue. Can someone tell me what a good general setting would be. I currently have my purples and blues at 30%, green and red at 0% and white at 7%. my zoas are not thriving my Duncan and dendro are doing okay my goniastrea is dying, my stilo and blue belle died and I am very worried about my torch coral. it used to free flow with 1-2 inch polyps and now it is inside with only a few 1/4 inch polyps sticking out! I really need help. According to my LFS my parameters are good. Thank you Lisa

Spare time

2500 Club Member
View Badges
Apr 12, 2019
Reaction score
It’s a cube 10g so about 15/16 inches
I think that it would be a good idea to rent a par meter. I do think that you could raise up the channels but without a par meter it is difficult to get a clear view of your light.

As for your water, do you regularly test and dose alk, calcium, and magnesium?

How often do you have some type of algae issue?

  • Constantly Something

    Votes: 222 42.0%
  • Every Month

    Votes: 30 5.7%
  • Every Few Months

    Votes: 62 11.7%
  • A Few Times A Year

    Votes: 74 14.0%
  • Once A Year Or So

    Votes: 57 10.8%
  • Every Few years

    Votes: 28 5.3%
  • Never.....(are you lying?)

    Votes: 36 6.8%
  • Other (please explain)

    Votes: 19 3.6%

Online statistics

Members online
Guests online
Total visitors