Acans not doing well

[fphipps]

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?

[Orion]

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.

[fphipps]

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-_-

[Orion]

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

[GraffitiSpotCorals]

Egg crate works great for blocking light.

[Djplus1]

Egg crate works great for blocking light.

It better, being that everyone on the planet other than reefers know eggcrate as light diffusers.

[YHSublime]

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...