Brown Jelly or something else?

[Silvergryphon]

I have a blue cali tort that one of my hermits knocked over down near one of my frogspawns. When I pulled it out and reset it where it normally sat, I noticed one of the tip was white, I assumed it was from the frogspawn stinging it. Two days later half of the tort is now white and I found a brownish goo swirling around the white areas. Am I looking at brown jelly disease, or is it possible it was just more sting damage from the frogspawn?

Tank stats:
90g, 50g sump
Photon 48 reef breeders LED lights
Amm - 0
Nitrite - 0
Nitrate - 10
Cal - 500
Mag - 1400
Dkh - 8.3

Cal and Mag are higher than normal as I just dosed Purple up the other day. My other SPS seem fine (Blue/green stag, capricornus, chalice, montis)

 

[Silvergryphon]

Well pretty sure it is Brown Jelly, came home this morning from work and in the 9 hours I was gone the other half of the frag is all dead. Luckily I did frag a piece off, so hopefully it is done and over with. I'll be keeping a close eye on everything for the next few weeks.

 

[Notquiterite]

It sounds like brown jelly to me. I lost two torches a while back from the same thing. It really does damage quickly once it sets in, hopefully you were able to save what was left. Good luck