Montipora bleaching?

[plunderisley]

So I noticed the past few weeks/month my montipora seems to be bleaching. I don't know if this is because it is growing (they grew a lot! triple in size roughly 6 months) and it is because of the placement/no light or if something is going on. I don't have any crabs in the tank. All the other corals are doing well - fully open. Water parameters are all good (Ca430,Mg1230,KH10.5,ph8.1, sg1.025, temp80F) and the polyps on the corals are fully open. What could be going on?

and my plate montipora is turning a bit "brown/red". I don't know if that's from some lighting or some algae. It doesn't blow off

Other corals

 

[plunderisley]

Any thoughts?

 

[Ptyochromis]

If I am seeing pic number 2 correctly, it looks like the inside of the bowl is bleaching. This is most often caused by debris settling inside the bowl.

Let us know what you have for flow and lighting. Do you dose anything?

 

[plunderisley]

MP40es and Pacific Sun Hyperion 2x150w LED lights.
Yeah that bleaching in the bowl I know it is from debris. It's been like that for a while. I try to blow the debris out with a turkey baster every couple of days.

I dose food, vitamins and amino acids for the corals.

 

[bogg]

Looks like stn from possibly a kh or temp swing
You also might want to check your potassium level
Water changes also may help
keep those params as rock solid as possible
Cross check your test kits with others

 

[plunderisley]

Looks like stn from possibly a kh or temp swing
You also might want to check your potassium level
Water changes also may help
keep those params as rock solid as possible
Cross check your test kits with others

Hmm it could be due to a Kh. I've been messing the past month with my Ca reactor and just got it set up a week ago. Kh,Ca,and Mg was out of balance for a bit.
Ill keep testing. Right now everything is stable.