SPS bleach from base up

uhupong · Dec 23, 2013

Can someone please tell me what are possible causes to have SPS 'bleach' from base up?

Thank you

jackson6745 · Dec 23, 2013

It's RTNing from the base up (it's dying). Search Slow Tissue necrosis (STN) and Rapid Tissue necrosis (RTN) When SPS bleach they are still alive.
IME causes are usually high nutrient related coupled with low alk. No one really knows for sure though

kacrocorals581 · Dec 23, 2013

Is dying. you can try cutting above were its loosing flesh and dip in a iodine solution and see if you can save some of it

uhupong · Dec 23, 2013

Im looking at what could making it happen.

Rob&Gab · Dec 23, 2013

try and clip it or glue around the white part. mainly clip it to try to stop the spreading.

MBG75 · Dec 23, 2013

Is it a maricultured or wild piece? If so, It can happen even if parameters are good.

Dashiki · Dec 24, 2013

What are your levels?

I had a colony stn while I was on vacation because a fish died and my nitrates spiked.

Any alk swings recently. Think back a month before it started it doesn't always happen immediately after the cause of the stress.

64Ivy · Dec 24, 2013

I've had Acropora stn from the bottom up when I elevated my alkalinity to upwards of 11 dKH. Once I brought it back down to 8-9, the die-off slowed, then stopped.

uhupong · Dec 24, 2013

My tank is 120G mostly with SPS

Alk 10 by doser
CA 460 by doser
MG 1450 by hand
Salinity 1.025. -Calibrayed
Phospate 0.05-0.1 -Hanna
No3 ~0 -Redsea
PH 7.85-8.05. - prob + salifert
Red sea NOPOX - on demand
Red ses reef energy - twice a week

Light 2 Maxspect razor
Flow MP40 +WP40
BRS reactor GFO + Activated Carbon
Skimmer SR-2000 bubble blaster
30G sump
Osmolator ATO
5 stage RODI read 000
Apex controller

uhupong · Dec 24, 2013

Rob&Gab said:
try and clip it or glue around the white part. mainly clip it to try to stop the spreading.

Cant clip, it happens on many base of colony.

MBG75 · Dec 24, 2013

Pretty sure nopox is a carbon source. That coupled with high alk could be an issue

Dan_k · Dec 24, 2013

Alk at 10 is really high if you ask me I try to keep mine at a constant 8

Dashiki · Dec 24, 2013

Phosphates at .05+ is high for sps that can be a cause.

With no measurable nitrates and high po4 alk over 9 can be an issue. I'd try gfo as my first attempt. Then try lowering the alk.

Dan1789 · Dec 24, 2013

I didn't think .05 was high, but I guess it depends on a bunch of other factors.

jedimasterben · Dec 24, 2013

Elevated phosphate would really only cause issues with coloration, and 0.05ppm isn't nearly enough to worry about that happening.

kuansreef · Dec 24, 2013

I have had the same issue for 3 years. If all your water parameters are normal and you have a chiller and cal. reactor, it's your ph swings due to lack of oxygen in your house. Hook up a tubing to your skimmer air intake from outside so it get air straight from outdoor. You will see a higher and more stable ph to keep sps. I used to have 7.8 on ph, now I have 8.4 and acros grow like crazy with huge never seen polyps.

bct15 · Dec 24, 2013

Your alk is to high for low nutrients

Dashiki · Dec 25, 2013

With a Hanna checker anything higher than .01 is high when you add in the +-.03 in the test.

To have alk that high with high po4 let the nitrates get up to 5 ppm and you will see things look better and recover.
Or
Lower your alk to 7.5-8.0 dkh and add GFO

kingb4c0 · Dec 25, 2013

Dashiki said:
With a Hanna checker anything higher than .01 is high when you add in the +-.03 in the test.

To have alk that high with high po4 let the nitrates get up to 5 ppm and you will see things look better and recover.
Or
Lower your alk to 7.5-8.0 dkh and add GFO

+1. Since you are using NoPox for nutrients control, check the Red Sea reef care Program videos.
http://www.redseafish.com/reef-care-program/