Acropora problems

nordnord

New member
Hi i really need help with some of my acros.
The yellow and green acros turned blue/purple in various locations especielly at the edges and tops of the colony and slimes really bad. And almost looks like its melting but the tissue doesnt die it only looks really bad.

And on the second pic if you look closely you can see it slime "melting" issue at the top polyps.


Info about the tank
250L
8*39w dusk dawn 10:00-21:00 full lightning 70% 14:30-19:00, fixture 30cm above water

Salinity 1.024
ca 450
mg 1300
kh 7
no3 2
po4 0,02
potassium 380

IMG_0511.jpg

IMG_0512.jpg
 
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