STN (sps coral dieing from base up) and how to reverse it?

carlo

Member
I'm having some bad luck with my SPS frags. hoping someone can shed some light on how to fix this problem.

Tank is a 90g, about 120 lbs of live rock, been setup since Jan. 2011 45 gallon fuge and 50 gallon sump.

Nitrates 5-10 ppm
Phosphates 0
Cal 480
Alk 7
Mag 1800

400 Ml of Vertex biopellets
Vertex 180 skimmer

Water is run through a 6 stage RODI/Chloramine system

And I have a filter sock that gets replaced every 3 days in the sump.

Lastly, lighting is through a Maxspect 160 LED.

I've been reading up on this, and what I came up with is that it's lacking nutrients. I'm thinking of removing the filter sock and hope that it helps replenish some missing nutrients in the tank...

Any advice would greatly be appreciated

stn.jpg
 
Top