Browning/ bleaching SPS

[Saltar]

Pink lemonade has browning polyps and some white branches.
Red cap montipora is almost completely black/ brown except the very outer edge that is still red.

Alk 9.0
Calc 450
Phos .03 Hanna
No3 - 1 ppm Red Sea

Think I can't get a good graph on the Radion Pros x 2 using bell curve that peaks at around 14k for 5 hours total photo period 12 hours. 30% intensity 7" above water. Corals on bottom.

55gal

 

[john90009]

imo they don't appear to be suffering from light issues- I would try to get your tests verified with another persons test kits.

 

[Saltar]

Which parameter would suspect it is?

 

[john90009]

well alk would be the main suspect for the corals burning tips like your pink lemonade- then again that substrates looks like it would trap a lot of stuff and be somewhat hard to take care of by your cleanup crew. What other sps do you have in the tank? I also see some sort of greenish acro that is showing minimal polpy extension- I don't see redbugs- I would probably think something's in the water of the levels might have shifted. I have thrown corals under a lot of different lights and have had them completely turn while but still keep the tissues and polpys on the coral. that looks like maybe the coral was stressed and something put it over the edge.

 

[Saltar]

Here are a few other SPS that seem fine.

 

[Saltar]

 

[Saltar]

The purple one was already white on that one side. LFS said it would color up later.

 

[john90009]

can I get a fts? how was the flow that the declined corals were in?

 

[Saltar]

Flow is fairly good I am running a Mag 12 plus have a Voyager pushing extra flow.

 

[john90009]

has the powerhead always been blowing towards them or have you moved them down on the bottom when you thought it was to much light?

 

[Saltar]

I recently moved the pink lemonade down just today it was in the middle of the tank with powerhead pointing directly on it. Red cap has always been on bottom in middle of tank flow was not directly on it.

 

[john90009]

hmm maybey some other people can chime in- what lights were the sps under prior to being under the leds- and you said the leds were only at 30%?

 

[Saltar]

The Red Monti looked like just a Gen 1 radion the pink lemonade was under AI Sol when I got it at the frag swap. Yes only 30% and today i turned on acclimation starting at 75% thinking they might be to bright.

 

[Saltar]

Update noticed lots of black bugs on montipora also lemonade has lost almost all it's skin now. Bug the cause maybe? Pictures attached not sure if you can see them they are sort of big compared to the coral.

 

[KoleTang]

Browning and bleaching are opposites.

Bleaching: Too much light, not enough nutrients, or both
Browning: Not enough light, too much nutrients, or both

 

[Saltar]

From the pictures you can see the polyps turned brown and the beaches white. The Monti almost completely brown so not enough light or nutrients?

 

[bct15]

The acro is dead, all of the flesh is peeled off... The bugs are probably pods picking at the remnants. The monti looks to be dead as well, looks like its covered in algae. The stylo you showed looks to be RTNing as well. One of your parameters is off or swinging really bad.

 

[KoleTang]

It looks like they are recessing, not bleaching. You are just seeing the bone. The remaining flesh seems to be browning out.

 

[Saltar]

Got LFS to test water. They have my salinity at 1.027 my digital Milwaukee has it at 1.026. They also have my PH at 8.0 but takes me am hour to get to store is was an hour after that before they tested. Also the show alk between 10-11. 3.6 meq I think. Calcium at 440. Their NO3 test shows 15ppm and they suggest it should be lower than 10. Thoughts?

 

[john90009]

Salts possibly high lol I like 1.024 or 25 . Alk at 9 cause it can be maintained there easily . Also maybes do water changes with clean water and try to siphon detritus out of your large shell substrate. I think your substrates trapping a lot of garbage and letting it decay . Be careful to not change to much all the sudden tho which can kill your other corals .