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Old 08-05-2012, 01:52 PM   #11
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I find I get bleaching a lot and that red **** on my sand I thought its cause it had to much red spectrum
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Old 08-05-2012, 02:32 PM   #12
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I find I get bleaching a lot and that red **** on my sand I thought its cause it had to much red spectrum
I also use the oddesea fixture i switched the bulbs out for phoenix 14k 250w and run reefbright actinics with them colors are amazing with this combo and i still get good growth i tried the 20k and they are very blue you will not need actinics with 20k but keep in mind you will get lil to no growth out of your coral but id reccommend trying phoenix 14k love em and used them for last 3 bulb changes
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Old 08-05-2012, 02:46 PM   #13
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Originally Posted by Madreefer420
I find I get bleaching a lot and that red **** on my sand I thought its cause it had to much red spectrum
Red spectrum is a result of old bulbs. The res stuff your referring to sounds like cyanobacteria, and it has nothing to do with lighting as it is a bacteria. Cyano is caused from excess nutrients.

The bleaching could be a number of things most notably water quality and amount of light. Color temp of 10k-20k does not cause this. Can be proven by the fact most people run 10-14k bulbs, not 20k.

20k is a specialty lighting often used in frag setups as 20k will bring out colors and really cause the corals to become fluorescent. Many times you will see frags that you buy for sale under 20k lighting. 10k will give best growth but it also a very white light so many people use 14k to through more blue and color into our tanks.
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Old 08-05-2012, 02:53 PM   #14
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Red spectrum is a result of old bulbs. The res stuff your referring to sounds like cyanobacteria, and it has nothing to do with lighting as it is a bacteria. Cyano is caused from excess nutrients.

The bleaching could be a number of things most notably water quality and amount of light. Color temp of 10k-20k does not cause this. Can be proven by the fact most people run 10-14k bulbs, not 20k.

20k is a specialty lighting often used in frag setups as 20k will bring out colors and really cause the corals to become fluorescent. Many times you will see frags that you buy for sale under 20k lighting. 10k will give best growth but it also a very white light so many people use 14k to through more blue and color into our tanks.
I agree i think the red slime you are seeing is cyano its a reddish maroon bacteria can also be a darker color but is a sign of bad water quality
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Old 08-05-2012, 02:53 PM   #15
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Well my water
Tests good I always thoughts it was my metal halides that were to bright should I lift them up maybe
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Old 08-05-2012, 02:55 PM   #16
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Well I just up sized my tank an added some sand could it be a light cycle
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Old 08-05-2012, 02:55 PM   #17
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Well my water
Tests good I always thoughts it was my metal halides that were to bright should I lift them up maybe
Ihave 2 250w mh over a 55 4" above tank cyano has nothing to do with lighting what are your trates and phosphates at?
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Old 08-05-2012, 02:56 PM   #18
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Ihave 2 250w mh over a 55 4" above tank cyano has nothing to do with lighting what are your trates and phosphates at?
Adding sand could be a cause did you stir your old sand?
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Old 08-05-2012, 03:08 PM   #19
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Nitrates I detectable and I have little to no phosphates according to my tester and I had to pull all the old Sand out of my tank when I up graded
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Old 08-05-2012, 03:13 PM   #20
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Nitrates I detectable and I have little to no phosphates according to my tester
If you have cyano you will get negative readings because the cyano will bind the nutrients how old are your bulbs ? i change my mh about every 8-9 months or so
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