Ricordea bleaching & scrunched up!

[dragonsong]

I have had this little guy in my tank since September when I first set it up! Within the past four days he hasn't expanded and is remaining mostly curled up. The ONLY change has been the addition of 2 more ricordea in January. I'm really worried he's dying D:

Water parameters:
Temperature: 79
Calcium: 430
Alk: 7
pH: 8.3
Ammonia: 0
Nitrite: 0
Nitrate: Almost 0? Really pale pink on my test kit.
SG: 1.025
Only fish are a lubbocks fairy wrasse & onyx clown in a 29g.

Out of all my corals this is the only one having an issue! I thought it might either be too much light or chemical warfare so I moved him to the far left in the dimmer corner by himself. What else could it be?
Pictures are of before and after. Before pic is all the way from last year so it has grown a teeny bit since then and is usually way bigger compared to today's picture.

 

[wij]

Id say a bit too much light. my red morphs did exactly the same i try to keep my ricordea in good flow too hope that helps?

 

[dragonsong]

Id say a bit too much light. my red morphs did exactly the same i try to keep my ricordea in good flow too hope that helps?

I moved it to a darker area in case that was the problem. It just seems weird that it was fine for months before going downhill over the course of a few days !

 

[MrCaveman]

do you try feeding it roids or coral frenzy? I recently lost several yumas and ricordeas that ive had for a while since dropping phosphates to color up my acros. My ricordea dont like low nitrate or phosphate so Im setting up a shroom tank for them all. Just LR, heater, water flow and Kessil.