Why is my sps STNing ??

[xclusive252]

Ok I know I will have info missing just ask and I will find the answer out. The tests are done with Salifert except for PO4 and alk with is done with both Salifert and Hanna. The results are;
Cal. 390
ALK. 8.4
Mag. 1390
PO4. 0.06


So as for the corals list of what is dying;
Red planet
Green slimer
Pearl berry
ORA plum crazy

As for lights I have Radion Pros with T5s and for flow I run a Gyre. I dose and the receipt is the BRS stuff for Alk cal and mag. If you have any questions ask and I will do my best to answer it. But as for what's going on in the tank. The sps is dying from the base up and I have no clue why or what to do at this point.

 

[Agioniko]

What size tank? Maybe your temp is fluxing. Do you use an apex or reef keeper

 

[Agioniko]

Also how long have you had the corals ?

 

[xclusive252]

Tank is 48x24x21 I do use an apex and my temp is between 77-79. The corals had encrusted and growth then just started to die. Maybe 1 year is the time I had the corals

 

[jackson6745]

Could be a lot of reasons. IME base STN happens often from changing GFO, and corals getting less light from shading etc. How large are these corals? How many t5's are you running? Do these corals appear to get less light than other corals in the tank?

 

[Ajskennels]

have you looked for any pest? id check for AEFW

 

[PaleHorse]

This will help you get answers
http://www.reefcentral.com/forums/showthread.php?t=2430841