Lighting issue?

robert_ellis

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#1
So I have a 135g. 5x 21x 24. I have a 6 bulb 5 ft ati with 2 4ft reefbrite blues. I'm having a bleaching issue that I just cant figure out.
Tank params are

7.8 alk- hanna
Ph 7.9- 8.1- calibrated Alex probe
Cal 450-470- hanna
Phos .13- hanna
Mag 1470- red sea

Could the 4 bulb setting on the ati be that much light where corals bleach out? Should I run only the 2 bulb setting with reef brites?

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djrice69

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#2
What is your salinity
 

djrice69

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#5
No3?
 

djrice69

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#6
Your po4 is high so hopefully your no3 is higher
 
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#8
Have you tried scheduled lighting? I have tried it and my sps stopped bleaching.play around with it. For mine i put on 7 hours on 7 hours off and so on.
 

djrice69

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#12
Well since you got algae manually remove it feed more. Btw since you have algae shouldn’t your po4 be zero or closer to zero as well?

0. I knew I'd forget something. My red sea states 0 but I'm having a pretty bad algae outbreak so I know there is plenty of it in the system... atleast enough for the algae to consume it.

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Try to get your nitrate up
 

djrice69

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#13
Did you just change out your bulbs? If so I’d raise them higher or allow them to break in
 

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