Receding Coral

[OrangeFaucett10]

Hey guys, I’ve been keep coral for sometime, roughly 8 years. I have a general idea of what to do and how to keep things growing; however, I’m stumped!

Quick back story, I moved my tank to a new home and neglected it where I ran into a huge issue of different types of algae. About two weeks ago, I got everything back on track. My dosing is two part and has back spot on with an all of 8.2 and calcium at 425 consistently for the last week. Mag is a little low just under 1200, but things are balanced. Just the past two days a few of my SPS have been receding again, despite my parameters not changing or swinging. I have a low nutrient tank nitrates and phosphates at zero despite my best efforts to raise them. My salinity has been a little high around .0128-29.

Additional variable, about a week ago I switch from t5s to three radions. I checked with a parmeter and everything should be right around the 250-350 par so I figure that’s not it.

I really need help here, any suggestions or ideas would be great!! Just so it’s clear the skin of the coral is almost peeling away and aside from the salinity idk what to do

 

[reef lover]

I'm not a stick head but I'd lower salinity and get some nutrients in there.
I'd also put the LEDs lower or on coral acclimation mode if they have it. Led is very different than t5s and can easily burn/bleach.

 

[dadnjesse]

If you have, had an Algae problem then I doubt your Phosphate and Nitrate is zero.