ICP versus Home test: IRON.

[Gabbone]

Hi guys,

Just got results from Fauna Marin ICP and according to them, iron is 13 µg/l (1019.6% of the ideal value).

I am surprise since:

My rodi tested 0ppm (fauna marin analysis + double check with my tds meter.) For Salt, I use Tropic Marin pro which is one of the best on market. Checked every single equipments of my tank and there's no stuff leaching iron in the tank.

Then, I bought a Colombo Iron Test which is super easy and simple to do and surprisingly my iron level is not even detectable (water is white).

This leads me to two possible conclusion:

a. Iron level is that high (above 7,5µg/l) that the test can't show results and the sample doesn't change colour. (I don't know how this works in this case).
b. Iron level is below the 0,5µg/l and Fauna Marin is terribly wrong.

Any thoughts? Corals, worms, fishes, inverts are all fine and thriving. I am very strict with WC and I do 10-20% weekly.

Thank you all!

 

[KStatefan]

Your icp results are in ppb and your test kit is ppm convert 13 ppm to 0.013 ppm which will be very low on your test kit

 

[Gabbone]

Got you, I didn't realise that! What should I do then? Do you consider this value dangerous for my tank?

 

[KStatefan]

It is high from all the recommended levels I have seen but do not know what it will cause. Mine has never been over 1 ppb.

 

[Randy Holmes-Farley Verified Community Expert]

Got you, I didn't realise that! What should I do then? Do you consider this value dangerous for my tank?

Home test kits for iron are not very useful unless you target very high values.

 

[Randy Holmes-Farley Verified Community Expert]

Got you, I didn't realise that! What should I do then? Do you consider this value dangerous for my tank?

Red Sea recommends very high values, above yours, without issue. It has a very wide range of acceptability.