Please help

[brenton.rhodes88]

Is this activated carbon?

 

[saltyfilmfolks]

no, marine pure rock. serves same purpose as live rock. Granular activated carbon.(gac)
https://www.chewy.com/marineland-bl...OOo8VxmcHgxfSMT6NiJtIaAsdj8P8HAQ&gclsrc=aw.ds

 

[brenton.rhodes88]

So the little tube things in the bags are marine pure rock can i ask what the bigger blocks are?

 

[saltyfilmfolks]

hard so see but i believe they serve the same purpose.

 

[Bruce Burnett]

If the leather is still solid and firm not mushy like it is rotting it could be getting ready to shed but it should have good water flow around it.

 

[brenton.rhodes88]

It seems as my tanks going through a little cycle came home re tested everything again and ammonia is lowering and i have higher nitrite and nitrate today

 

[brenton.rhodes88]

If the leather is still solid and firm not mushy like it is rotting it could be getting ready to shed but it should have good water flow around it.

I took it out it is not in shed i peeled a lil off and took flesh away its rotting and smelt gross

 

[Ponraj A]

I had a similar issue once in the beginning at the leather coral, its gone. The mistake was, I was checking Salinity in Brix refractometer and the actual salinity was 52ppt.
Hope you can also cross check the salinity apart from all the other suggestions. I have seen my leather coral with black peeling skin and after two days it was rotten and the whole tank was smelling.