Is STN ?

[minsmarine]

Two frags of my SPS col, turn white while light is off and change to dark green when the light is on.

Is STN ?

Light -> MH 250w 20K Photoperiods 9hrs

SPS is about 8" from light

PH 8.5

NO2->0.01

NO3->20PPT

Ca -> 700 high case high dosage and trying to lower down

No trace of annemonea....

It has been about 10days now, so far no poly expend out.

[Achilles Tang]

STN = Slow Tissue Necrosis.

As long as the SPS tissue is not flying off.... it could be just growth tips or maybe tissue recession.

[minsmarine]

Tks AT. Tissue is not flying off, sticking I can see. Monitoring closely as it was my 2nd SPS in my tank. Even though I am so new, SPS is so exciting.

I was told that RTN mean within 24hrs whole SPS gone, is that right ?

[Achilles Tang]

RTN can strip a colony bare in a minute... you will see the flesh literally peeling off and flying away from the white skeleton before your eyes.

[minsmarine]

No No, thank you. I don't want to see with my own eyes and hope it'll not happen in my tank.

At least I enjoyed watching them. So far starting so pls no no

[mUAr_cHEe]

RTN can strip a colony bare in a minute... you will see the flesh literally peeling off and flying away from the white skeleton before your eyes.

wonder if anyone has a video of that happening...