Gold torch turn brown and become crytal clear

[An ngo]

I have a gold torch almost 10 months under T5 and kessil . Par at that position around 150-200. Torch is doing fine and grow pretty huge. It started to turn brown acouoke week ago due to overfeeding which bring nitrate up to 15 and phosphate 0.2. Kh is 7.6 and stable for a while. Cal stable as well. However, it started to turn from brown to crystal clear in couple day. Please help. That is a huge torch and I don’t want to lose it

 

[DSC reef]

It looks pretty bleached like it expelled a lot of zoox. Typically chemistry swings can cause this issue. Any changes in temp, salinity, etc?

#reefsquad

 

[An ngo]

Yes salinity change from 1.023-1-025 last couple week due to my hermit crab block my return pipe from fuse. Salt water all over the place at that day and salinity drop down to 1.023. I bring it up to 1.025 in 2 days. What should I do now. I believe my light isn’ the reason of bleach because my torch was doing pretty well under my light schedule

 

[Lasse]

What´s the temperature and pH?

Sincerely Lasse

 

[An ngo]

What´s the temperature and pH?

Sincerely Lasse

I haven’t checked but I think nitrate and salinity swing cAuse that issue. Should I feed it more or just keep those parameters stable and it should be fine ?

 

[Lasse]

Environmental research indicate that lower pH and higher temperatures in combination can cause bleaching.

Sincerely Lasse

 

[An ngo]

Environmental research indicate that lower pH and higher temperatures in combination can cause bleaching.

Sincerely Lasse

It could be, so should I feed my torch more or just balance those and it wil heal by itself?

 

[Punchanello]

The good news is that they can come back relatively quickly. The fact that it' isn't retracted is a positive.