SPS STNing

[jasony816]

I have been dosing Vodka/MB7 for about 3 months now to bring down the Nitrates and my current dose is 3.8ml/daily. My corals were doing fine and colors were getting better and had some growth but recently its been going down hill, some are starting to STN. I also have GFO/Carbon to clean the water.

Not sure if this helps but this also started when I took out all my fish to put in QT for ich, so the tank is pretty much just corals, however I do feed the tank with some coral frenzy from BRS.

My params are:
NH3:0
PH:8
NO3:<20
PO4:0
CA:480
ALK:10

 

[ezerasurfr]

sounds like they are not getting enough food if this all started when you took the fish out. but thats just going on the info you provided to us.

 

[jasony816]

Not enough food will cause them to STN? Feeding the coral frenzy doesn't help, or should I feed even more? Do you think the Nitrates/Alk is bad enough to cause them to STN? I was suspecting something chemical in the water but I dont know, do you think using more carbon to rule that out?

Any recommendations as to what to do? I really dont want them all to slowly STN.

 

[jasony816]

I have stopped all dosing GFO, I am just using carbon now and feeding coral frenzy in hopes that the corals stop STN as I believe its the dosing and having no fish in the DT as to why the corals are having STN.