HELP pls leather toadstool

[Dantheman18t]

Hi there I have a toadstool and over the last week he is going brown and now tearing I have 3 toadstools in the tank and the other are not as bad but they are not coming out http://tapatalk.com/mu/5cee3626-1569-08dc.jpg

http://tapatalk.com/mu/5cee3626-1581-75f3.jpg

http://tapatalk.com/mu/5cee3626-1597-4498.jpg

Hope you can help me

Thanks dan

[StephLionfish]

What are your water params?

My toadstool closes up when I need to do a water change...

[Dantheman18t]

Ammonia 0
Ph 8.1
Nitrite 0
Nitrate 0
Phosphate 0
Calcium 500
Sg 1.025
Mag 1410
Kh 6.1
Alkalinity 2.17

[gflat65]

Don't see too many tanks with 0 nitrates... Alk is a little low (and ca a little on the higher side). In a softie tank, water changes can help balance them out (depending on which salt you use-some are higher in ca, alk, and/or mag than others). Run some carbon and give them time. Leathers tend to close up every once in a while and 'refresh' themselves. Is it a waxy tissue coming off, or does it actually look like the coral is disintegrating? If waxy, that is fairly common for toads. How much flow is it under? They generally need a little bit to help with the shedding process. If not disintegrating or getting covered in black slime and falling apart, just give it time (not all falling apart is something to be highly alarmed about initially-mine self propagate by developing white lesions and dropping pieces). I'm a big fan of carbon to help clear up chemical warfare, among others nasties in the water.

[2reefnutz]

+1 regarding flow, mine always do better in a fairly moderate to strong current.