STN in my SPS's

[Claudio Barros]

Hi guy.
I'm having some STN in my sps corals.
Interesting is that began in top tip and progress to down base coral.
What do you thinks about this?

Thanks.

 

[DavidinGA]

Light shock? Alk swings? Salinity off? Temperature swings? Pests? Toxins?

Tons of things that could cause that...

 

[Claudio Barros]

Hi,
I am using LED to illumination of my aquarium.
My parameters are:
KH = 7,2kh
CA = 500
NO3 = 20ppm - very high, I know
PO4 = 0,5
MG = 1250
I don't know how is my potassium and iodine
Temperature swings between 27 - 28ºc
And I don't have pest in my tank.
My child put a toy inside in my sump.
I don't know if this caused my problem
What you think about this?

Detail. My tank has more of the two years old and never lost any sps

 

[Subsea]

How long was toy in water?

Depending on manufacturing materials, it is possible. Perform a large water change for dilution. Use small amounts of granulated activated carbon (GAC) 24/7 for chemical filtration. Change GAC weekly.
Patrick

 

[Claudio Barros]

Thanks Patrick
I made change of water 50%.
I am using help filter with actived carbon 24/7 now. I will go change weekly. Thanks again

 

[doctorwhoreefer]

Get some Poly-Filter too. The stuff that changes color depending upon the contaminant it absorbs. Even if it's traces of something, it could hurt. I would question the toy too.

 

[Claudio Barros]

Thanks doctorwhoreefer.
I don't know of the is made of car toy, but I think that is of the mixed iron. I think.

 

[dr.big]

Hi,
I am using LED to illumination of my aquarium.
My parameters are:
KH = 7,2kh
CA = 500
NO3 = 20ppm - very high, I know
PO4 = 0,5
MG = 1250
I don't know how is my potassium and iodine
Temperature swings between 27 - 28ºc
And I don't have pest in my tank.
My child put a toy inside in my sump.
I don't know if this caused my problem
What you think about this?

Detail. My tank has more of the two years old and never lost any sps

Your no3 is high but it is not that bad. But your po4 is really high!

 

[jda]

IMO, most likely from the high P04 and NO3. Try and get them down below .01 and 2 or 3.

 

[doctorwhoreefer]

Any update on stuff Claudio? Hope things are doing well!