LPS dominant tank ICP results (help please)

[micky015]

These are my current ICP results, most of them seem good, except phosphates, phosphorus silicone and zinc, but I have no idea where they could be coming from.

Tank has: bubble coral, elegance, Duncan, Xenia, mushrooms, zoas, clove polyps.
All of my LPS have and are doing amazing, but over the last 3 months my zoas, mushrooms and Xenia have been going downhill, really confusing for me as I thought soft corals are hardier and easier. I do weekly water changes, I don’t dose anything. It’s a 123L fluval saltwater tank with skimmer and chiller.

Thanks for help

 

[TX_REEF]

for silica, I know RO/DI insufficiency can be a culprit. Perhaps you need to change out the filters and resin on your unit? did your ICP also test your RO/DI water? That would answer that.

On phosphate, I may be mistaken, but 6.5mg/L means 6.5 ppm, which is over 10x higher than any reasonable level. Is it possible your sample got contaminated somehow? And as a follow-up, what are your nitrates at? I'd try testing N and P on your own and see what the result is.

 

[liddojunior]

Your calcium and magnesium are very skewed.
I don’t know your ALK but I’m guessing it’s low and not stable.

Your Alk and Ca are tied together and Mag is the middleman that lets them play nice.

I’m guessing your nutrients are high and are consuming alk
And with the low mg. It’s hard for your corals to use up the Ca.
I would bring up the mg and then get all stable.
You can’t bring up the Alk first, since low mg will cause precipitation when you try to increase alk

 

[Reginald Reefer III]

The one thing screaming bloody murder to me is your iodine levels. That's crazy high.

IMO use some activated carbon and test again a couple weeks after using that.