What's wrong

[Butterflyer]

All my corals has brown tissue on them, this has been going on for almost 1 month now.Does anyone know what's wrong?

 

[MNreefer386]

any pictures? It might be cyanobacteria coating everything, unless it is the actual coral tissue that is brown... then I would check Nitrates. What are you water parameters?

 

[Butterflyer]

The nitrate are at 0 ppm

It looks exact what leathers do sometime, could they be excreting?

 

[mr pink floyd]

if you have halides, it most likely means you need new bulbs,

heck even if you dont you might need new bulbs

 

[DJ88©]

[moved]

 

[MNreefer386]

it almost looks like your leathers are doing their "molting" process and collecting cyanobacteria. If that's the case it should clear up in a few days. Are they polyped out right now?

 

[thereefmaster]

mine do that about once a month.

I don't think it is anything bad, mine have done it even since I bought them, about 2 years ago.

HTH

Nate

 

[Butterflyer]

They barely have their polyps open when the slime has fallen off, maybe they do this because they protect them selfs from UV-beams and then they will get better when the "danger" is over, just my tought tough.

 

[MNreefer386]

This process goes faster if you have more waterflow. Just my experience...

 

[Butterflyer]

I have 4 Tunze 6000 with a controller, i think thats enough waterflow...