Acro is staying withe

[Marcoandre]

Hi, my acro is staying withe! Can anyone help me?

Temp 25•c
Dens. 1024
Ph 8,2
Ca. 420
Mg 1400
Kh. 9,6
Po4. 0,1

Reguards

 

[LetItReef]

You did not mention what type of Light and Flow.

 

[luke33]

That guy is a goner unfortunately. I bet if you blew it with a turkey baster the rest of the skin would flake off.

How are you testing your phos? and also what LetItReef asked

 

[Marcoandre]

Hi, or t247
50% whithe
35% other
Jebao wp 25
Jebao dc 3000
Reguards

 

[Marcoandre]

I use jbl po4 test!
What is the reason for this? No anything can i do to save it?
Im not dosing mg for 4 weeks! Mg stays at 1400 without dosing, is it possible?

 

[luke33]

Really the only good po4 test is by using a hanna checker. I have never trusted any other phos test. If your phos is off by .05-.1 it can make quite a difference. If you are at .1 phos that is getting up there and could be the issue.

Generally when sps start to STN or RTN they are very difficult to save, especially if its just a frag. Do you have any other sps and how are they doing? Sometimes sps just do this and you never really know. It could have gotten stung or slimmed, tough to say, but I'd bet on the phos. Although .1 isn't the end of the world if you are not using a hanna checker your .1 could be a .2 or .3....etc

 

[rlman41299]

You might wanna check your nitrates too. Once mine starts to rise up above 10ppm my sps starts to stn.

 

[Marcoandre]

Ok! This is the one! The rest are good!

 

[Oscaror]

staying white? You mean it was white when you bought it?

 

[CoralClark]

Looks like stn starting to me

 

[Chameleon]

Classic RTN. Not STN. Not flow or light related. Stress related. Usually temp or alk swings. Sometimes something else like salinity. The tank looks young given the algae in the picture. Maybe its still cycling or in a mini cycle

 

[Marcoandre]

When i bought it was normal! Algae appears when i put an egg crate plate! I added chaeto some weeks ago! I have 0,1 po4 and i think in an alk swing! Temp and salinity are normal! I clean the coral with coral rx and frag a good tip!