First ATI ICP: High Zinc, Lower Iodine - a couple Q’s

[Nick711]

Total system is ~45g, predominantly LPS / soft coral / RFAs (no SPS) along with fish / inverts.

Based on my ATI ICP - It looks like most of the major elements are relatively in-line, however, many of the minor elements are degrees higher or lower than the benchmark - lithium, silicon, barium, zinc all high and iodine low. Luckily, all the pollutants were undetectable.

ATIs two recommendations (surprised no mention of iodine?):
Dose Manganese supplement
Dose Iodine supplement

1. Should I worry about my Zinc level, or any of the other out of range minor elements? I’m a bit at a loss for why Zinc is so high, as I’m extremely cautious with contamination (i.e. hands never in tank without rubber gloves, strict SW & RODI storage / mixing regiments) although I understand there is potential this could have come from a metal component in the tank. I do actively

2. Does anyone know how much Iodine or Manganese are in Reef Crystals IO? Trying decide if I should dose or just do more frequent WCs… as of now, I do not do WCs too frequently if my main parameters are in check. (However, I do think I did a 10% WC right before this ATI sample was pulled).

Highly appreciate any other feedback - thank you!

Symbol	Value	Calculated reference value	Difference
Base elements
Salinity	33.99 PSU	35.00 PSU	-1.01 PSU
Carbonate hardness	8.97 °dKH	7.50 °dKH	+1.47 °dKH
Major elements
Chloride	19146 mg/l	19070 mg/l	+75.60 mg/l
Sodium	10553 mg/l	10595 mg/l	-42.00 mg/l
Magnesium	1307 mg/l	1267 mg/l	+40.01 mg/l
Sulfur	940.6 mg/l	886.1 mg/l	+54.49 mg/l
Calcium	462.6 mg/l	405.5 mg/l	+57.13 mg/l
Potassium	386.5 mg/l	393.0 mg/l	-6.43 mg/l
Bromine	88.61 mg/l	64.53 mg/l	+24.08 mg/l
Strontium	9.98 mg/l	7.71 mg/l	+2.28 mg/l
Boron	5.34 mg/l	4.24 mg/l	+1.10 mg/l
Fluorine	0.80 mg/l	1.25 mg/l	-0.45 mg/l
Minor elements
Lithium	385.6 µg/l	163.7 µg/l	+221.8 µg/l
Silicon	167.7 µg/l	96.31 µg/l	+71.37 µg/l
Iodine	20.74 µg/l	62.60 µg/l	-41.87 µg/l
Barium	48.77 µg/l	9.63 µg/l	+39.14 µg/l
Molybdenum	6.62 µg/l	11.56 µg/l	-4.94 µg/l
Nickel	1.63 µg/l	0.48 µg/l	+1.15 µg/l
Manganese	u.	0.96 µg/l	-0.96 µg/l
Arsenic	u.	1.44 µg/l	-1.44 µg/l
Beryllium	u.	0.10 µg/l	-0.10 µg/l
Chrome	u.	0.48 µg/l	-0.48 µg/l
Cobalt	u.	0.10 µg/l	-0.10 µg/l
Iron	u.	0.48 µg/l	-0.48 µg/l
Copper	u.	0.48 µg/l	-0.48 µg/l
Selenium	u.	0.48 µg/l	-0.48 µg/l
Silver	u.	0.10 µg/l	-0.10 µg/l
Vanadium	4.00 µg/l	1.44 µg/l	+2.55 µg/l
Zinc	25.40 µg/l	1.93 µg/l	+23.47 µg/l
Tin	u.	0.48 µg/l	-0.48 µg/l
Nutrients
Nitrate	4.23 mg/l	2.00 mg/l	+2.23 mg/l
Phosphorus	11.59 µg/l	14.45 µg/l	-2.86 µg/l
Phosphate	0.04 mg/l	0.04 mg/l	-0.01 mg/l
Pollutants
Aluminium	u.	0.10 µg/l	-0.10 µg/l
Antimony	u.	0.10 µg/l	-0.10 µg/l
Bismuth	u.	0.10 µg/l	-0.10 µg/l
Lead	u.	0.10 µg/l	-0.10 µg/l
Cadmium	u.	0.19 µg/l	-0.19 µg/l
Lanthanum	u.	0 µg/l	+0 µg/l
Thallium	u.	0.10 µg/l	-0.10 µg/l
Titanium	u.	0.10 µg/l	-0.10 µg/l
Tungsten	u.	0 µg/l	+0 µg/l
Mercury	u.	0 µg/l	+0 µg/l

 

[Randy Holmes-Farley]

I’m not sure if that zinc level is a concern. I’d go by how the tank creatures seem.

 

[Randy Holmes-Farley]

The lithium is no concern.

Might you benefit from a trace element mix? Maybe. Easy enough to try something like Tropic Marin A and K.

 

[Nick711]

The lithium is no concern.

Might you benefit from a trace element mix? Maybe. Easy enough to try something like Tropic Marin A and K.

Thanks, Randy, and good suggestion. I’ll look further into those to see which I may benefit from (if not both). I know one contains zinc, which I’m not sure I’d be looking to add, but to your point above, my tank inhabitants largely seem fine. I have some coral that are a bit bothered at the moment, but I think it may be driven by digitate hydroids and not my chemistry. Thanks for the reply!