Sps polyps bleaching

[Parraman]

What can cause this?
I will take a better pic tonight.

What bothers me about this bleaching is that is the polyps thats bleaching.
It didnt start at the base or the growth tips.
Its just the polyps even the polyps thats not getting direct light.
(The ones thats under the branches as in the picture below)

 

[ajcanale]

It looks like you are referring to the corallite tissue rather than the polyps themselves, which seem to be retracted. They might appear bleached because of thinning tissue, it's really hard to say without knowing any details.

Cal
Alk
Mag
NO3
Phosphate

Flow and Lighting

Need to provide details of the above.

 

[Parraman]

Cal 410
Alk 7.8
Mag 1150
NO3 - will have to test
Phosphate 0.0-0.3

Think i have enought flow. Two Tunze's 6095
Water level is 30cm's
They are directly under aquaray led tiles.
The pink mili's are fine and show growth.

Im going to test the potasium tonight

 

[jda]

That coral and a Mille are going to have different tolerances to light. The Mille is shallower water and can handle excess yellow/green/red that most LEDs give out. The blue one cannot.

I think that you are killing the coral with too much light from the "white" diodes, but who knows for sure.

What is your diode count/config. What are your settings?

 

[CoralReeForrest]

From your specs you just posted your magnesium is quite low, should be above 1300.

 

[Aqualund]

your bleaching them with too much light. get a par meter and measure what you're at. But I get the sense just from the picture that it's waaaaay too bright in there.

 

[NaClTDog]

Any suggestions which type of par meter?

 

[Aqualund]

an apogee will do just fine to get in in the ballpark of not bleaching. I bet you're at 500+ and you'd want to be around 250-350

 

[Parraman]

I had a par meter but think it was broken cause it said at that level it is at 250.

I did move it out of the light so hopefully it will recover.
Do digitata's also require less light than the milli's? This will make sense cause the milli's are doing awesome

 

[Aqualund]

Yes, the milli's can do well all the way up to like 700par, and sometimes they only flouresce at levels that high....but yeah the digitata, and pocillipora etc need low light...around 100-150.