Frag bleached overnight?

[Ramon Estevez]

I’ve been adding small frags to the tank drip acclimating for 30 minutes then into the tank. Recently got a few LPS frags one has done great the other bleached almost overnight. Still see some polyps left but I don’t have much hope for it. My PH is 8.0, salinity 1.024-1.025, phosphate and Nitrate almost undetectable. The only thing I can put two is light intensity? Any thoughts ?

 

[reef lover]

Pic?

 

[Ramon Estevez]

Pic?

Above the Hammer coral

 

[NowGlazeIT]

Just to scratch off a possibility here but could your heater be malfunctioning at night? Do you have alarms that will notify you if the temp gets to warm?

 

[NowGlazeIT]

Anytime I’ve accidentally bleached I lower my light intensity and it takes a few days to see color come back then I slowly start increasing the light back to normal or I will lower the animal away from the light

 

[reef lover]

Still hope for him move him lower and see if it helps.