Blue ridge, setosa and Brandi’s palys bleaching.

[JMM744]

These corals are fading in color. Same system but different tanks. T5 lighting and the par is around 200/250. Alk is 9, cal 450,mag is 500, po3 is 7 and pho’s.is .07. Ph is around 7.8
I feed the tanks heavy and use aminos once a week. Have been dosing vibrant and hydrogen peroxide for hair algae which is on its way out. The other sps and lps and zoa corals in the system are doing fine and growing.
These were growing quite well and slowly started to fade in color. Very pale now but not dying , just loosing color.
Any suggestions?
Thank you, Jim

 

[Hemmdog]

Do you dose iodide or potassium iodide ?

 

[C. Eymann]

What's your temperature doing in the system? I understand it's two tanks but one system, how do the lighting setups on the tanks differ from eachother? are the displays being recirculated through the system same turn over ?

Have you looked really closely for pests?

 

[JMM744]

Temps are steady around 77/78. Both tanks are lite by t5 ati lights and the bulbs are about a year old. Checked par about 2 months ago. The sump is 100 gal. with a ton of live rock and plenty of turn over and flow rate. I do not dose either of those.

 

[Zerobytes]

Do you dose iodide or potassium iodide ?

Hi.

What affect would that have?

 

[Charlie’s Frags]

Stop using vibrant with sps