fphipps July 13, 2014 Share July 13, 2014 Ever since I changed my lights from LEDs to ATI T5 my acans have not been opening. They have feeders out at night but do not open during the day. My scoly that I recently got seems to be in a similar boat. My favia, trumpets and other LPS as well as my softies and acros seem fine and happy. My nitrates are a tad high, around 10-20ppm but with everything else doing fine I don't believe that is the problem. All other parameters are in check. ALK- 8dkh Ca- 480 Mg- 1350 Sg- 1.025-1.026 I have tried moving them to more shaded parts of the tank, less flow, more flow, more light... Nothing makes them happy. I got the ATI in the beginning of May Any thoughts? Link to comment Share on other sites More sharing options...
Orion July 13, 2014 Share July 13, 2014 Which ATI fixture do you have? Is it a Sunpower? If so I was in a similar situation when I switched from LED to T5. The ATI lights put out a lot of PAR, and I had to move mine to a more shaded area of the tank. It took about a month or so until they started opening again. Link to comment Share on other sites More sharing options...
fphipps July 13, 2014 Author Share July 13, 2014 Yeah 6x80 SunPower. I raised the light after I moved them to the shaded part of the tank. My light is now 15 inches above the tank. Which I think is high. My montipora caps were also bleaching with the light 12 inches above and they seem to have recovered their color, though the nudibranchs aren't helping with them-_- Link to comment Share on other sites More sharing options...
Orion July 13, 2014 Share July 13, 2014 Did you light acclimate the tank? I used two layers of window screen across the top of my tank after I put my light up for a month or so. This reduces the intensity of the light hitting the coral, and slowly acclimates them. Might want to try that if possible Link to comment Share on other sites More sharing options...
GraffitiSpotCorals July 13, 2014 Share July 13, 2014 Egg crate works great for blocking light. Link to comment Share on other sites More sharing options...
Djplus1 July 14, 2014 Share July 14, 2014 Egg crate works great for blocking light. It better, being that everyone on the planet other than reefers know eggcrate as light diffusers. Link to comment Share on other sites More sharing options...
YHSublime July 14, 2014 Share July 14, 2014 It better, being that everyone on the planet other than reefers know eggcrate as light diffusers. This is pretty funny. Op, I've heard folks use tints to slowly acclimate... Link to comment Share on other sites More sharing options...
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