Montipora bleaching

[gaving]

I have had this monti for about 5-6 months and just out of the blue goes from orange to almost fully dead. Just last week my acro died.

sal 1.025
alk 9.9
cal 480
mag 1450
nitrite 0
nitrate 5
amonia 0

 

[dvgyfresh]

I have had this monti for about 5-6 months and just out of the blue goes from orange to almost fully dead. Just last week my acro died.

sal 1.025
alk 9.9
cal 480
mag 1450
nitrite 0
nitrate 5
amonia 0

Was it kept on the sand? Looks like algae growing on it can we have a FTS? My montipora receded a tiny bit due when fighting Dino’s

 

[gaving]

I only put it in the sand from worrying about bleaching because I am raising the light by .5% a day for the past 15 days. So far in this tank I have not delt with dinos yet.