Exposing SPS during water change

[windcoast reefs]

Originally Posted by Aquattro

I'm at 0 on both, still have a gray cross Everything else is blue or purple, just not that one.

I'm starting to get purple tips on the one I got from you, but I have it a half inch from the surface right beside a power head.

But back to the question! Yeah I leave mine exposed for 30 minutes every week without a problem!

[Reefer Rob]

I had from 12k to 14k over the years. 400w then reduced to 250w because I thought it too bright.

I had macro in a refugium with nutrients too low to grow Chaeto, so ya, low nutrient is likely key... though this suprises me. At times I've struggled to get corals to color nicely... just never the Purple Cross It had nice color from the day I put it in the tank till the day I took it out.

[cuz]