Acans and blastos showing skeleton

BRS

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Tank is about 1 year old, some of the acans are older than that. No clue as to why they started to show skeleton and heads started dying off so I ordered an ICP, recieved ICP test today and everything (except silicon is high) seems to be in line. Lights have not changed and i have been keeping alk steady at 8.5. I will attach ICP results if anyone has any advice i would appreciate it thanks:

Alk 8.5
Nitrate 3ppm
Nitrite 0ppm
Ammonia 0PPM
PH 8.1

Dosing Aqua 24 ml of Aquaforest 1+ 2+ 3+
Dosing 280 ml of Kalkwasser mixed at 2tbs
Running Crabon 24/7 in a reactor
Running GFO 24/7 in a reactor

UNWANTED HEAVY METALS ANALYSIS SETPOINT
Hg MERCURY 0 µg/l 0 µg/l
Se SELENIUM 0 µg/l 0 µg/l
Cd CADMIUM 0 µg/l 0 µg/l
Sn TIN 0 µg/l 0 µg/l
Sb ANTIMONY 0 µg/l 0 µg/l
As ARSENIC 0 µg/l 0 µg/l
Al ALUMINIUM 4.811 µg/l 0 - 60 µg/l
Pb LEAD 0 µg/l 0 µg/l
Ti TITANIUM 0 µg/l 0 µg/l
Cu COPPER 0 µg/l 0 µg/l
La LANTHANUM0 µg/l 0 µg/l
Sc SCANDIUM 0 µg/l 0 µg/l
W TUNGSTEN 0 µg/l 0 µg/l

MACRO-ELEMENTS ANALYSIS SETPOINT
Na SODIUM 10786 mg/l 10000 - 11300 mg/l
Ca CALCIUM 533 mg/l 415 - 520 mg/l
Mg MAGNESIUM 1393 mg/l 1320 - 1500 mg/l
K POTASSIUM 358 mg/l 380 - 480 mg/l
Br BROMIDE 58 mg/l 62 mg/l
B BORON 4.062 mg/l 4.5 mg/l
Sr STRONTIUM 10.579 mg/l 8 - 12 mg/l
S SULPHUR 948 mg/l 900 mg/l

LI-GROUP ANALYSIS SETPOINT
Li LITHIUM 201 µg/l 200 µg/l
Ni NICKEL 1.889 µg/l 5 µg/l
Mo MOLYBDENUM 12 µg/l 12 µg/l

I-GROUP ANALYSIS SETPOINT
V VANADIUM 0 µg/l 0 - 3 µg/l
Zn ZINC 1.519 µg/l 0 - 5 µg/l
Mn MANGANESE 0 µg/l 0 - 3 µg/l
I IODINE 72 µg/l 30 - 90 µg/l

FE-GROUP ANALYSIS SETPOINT
Cr CHROMIUM 0 µg/l 0 µg/l
Co COBALT 0 µg/l 0 µg/l
Fe IRON 0 µg/l 0 µg/l

BA-GROUP ANALYSIS SETPOINT
Ba BARIUM 3.525 µg/l 0 - 10 µg/l
Be BERYLLIUM 0 µg/l 0 µg/l

SI-GROUP ANALYSIS SETPOINT
Si SILICON 273 µg/l 0 - 200 µg/l

NUTRIENT-GROUP ANALYSIS SETPOINT
P PHOSPHORUS 8.574 µg/l 6 - 23 µg/l
PO4 PHOSPHATE 0.02623644 mg/l 0.018 - 0.07 mg/l
 
Aquarium Specialty - dry goods & marine livestock

Biokabe

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It's always hard to say, but there are a few things that I would want to eliminate first:

1) Is there anything that could be picking on them? Fluffy LPS corals are a favorite of many coral-munchers. Any angels, filefish, butterflies, etc, in the tank that might be helping themselves to a meal?

2) Have you changed your flow patterns recently?

3) Any recent additions to the tank that coincide with the regression of your LPS?

4) Have you altered how you feed the tank? Do you spot-feed the corals at all?

5) Is the carbon tumbling in the reactor, or packed tightly? Same question with your GFO.

Your water levels don't look bad, so I'd start looking at other factors when trying to diagnose what's going on.
 
BRS

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