Montipora problem

[karma]

Hello, i have problems with my montiporas actually with 3 montiporas , i don't know what is the problem because I see my parameters well,
Kh 9.1
Nitrates 6
phosphate 0.05
Magnesium 1440
Calcium 460-440

 

[twentyleagues]

Pic Is pretty blurred. If you are talking about the darkened spots its hard to tell looks to still have polyps cant tell if thats just it being darker in that area or an algae issue. Try to get a better pic in white light.

 

[karma]

Pic Is pretty blurred. If you are talking about the darkened spots its hard to tell looks to still have polyps cant tell if thats just it being darker in that area or an algae issue. Try to get a better pic in white light.

It's the dark area that actually looks bigger and it's on 3 different monitors I have. In one even brown algae was growing.

 

[twentyleagues]

It's the dark area that actually looks bigger and it's on 3 different monitors I have. In one even brown algae was growing.

Algae is not good. Could be burned from too much lighting and died off but that usually starts as it turning white not dark.

 

[Uncle99]

Algae grows on dead coral or dead areas.
Your parameters are on, but how mature is the system?

 

[karma]

Algae grows on dead coral or dead areas.
Your parameters are on, but how mature is the system?

My tank is 5 months old. This problem begin when i used to medic by polyps lab 3 weeks ago.