Need some help I am losing some corals

[jordan3548]

For around the past month or so Ive had this Brown Stringy stuff sorta looks like red slime but brown take on some of my corals mostly my Zoas and 1 SPS I dipped all the affected corals in revive and put them in a seperate tank (my Zoa only tank) and all have seemed to rebound.

The algae is still in my 120 main display tank and its mainly only affecting the remaining zoas I cant get out. Its not bothering the mushrooms or any LPS or SPS except that 1. But I had 1 colony of zoas with about 300 polyps and theres probably only 50 left if that. Whatever it is it kills fast.

Any idea what this stuff is and what I can do to fix it?

 

[Troylee]

Sound Like diatoms... They love silicates.. Check your rodi filters and keep up with regular maintenance it will subside...

 

[JOSE CASAS]

What is your po4 level reading?

 

[jordan3548]

Last I checked Phosphate there was a hint of it I think it was like .01 that was about a month ago and havent added anything that would add more the tank has been running fine for 5 years with the same live rock in it. I feed rods food and I dont think there is a significant source of Phosphates in there. I know its not Diatoms I know what that is this is more stringy type stuff like mucus sorta. Its not dinoflaglelites<---sorry if I mispelled it lol. I have never encountered this stuff in my aquarium. I googled it looking for answers and found some called brown jelly from a few years ago which they say the affected coral is basically a goner but I think it may be outdated and with the recent trends in our hobby im sure theres some sort of remedy to conquer this stuff