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In the new all for reef you increased both A and K?You can add additional K+ and A- Elements to All-For-Reef.
For adding iodine I recommend to add A- Elements only.
Our salts contain good levels of rubidium. Neither ICP-OES analysis of the well known laboratories nor test kits test for rubidium. Do you have numbers at which levels dosing rubidium should make sense?
Rubidium is an alkaline metal element, like lithium, sodium and potassium, and a strong and rapid depletion of these monovalent ions is very unlikely.
My goal now with all for reef is to limit the water change to the minimum and add the elements that are missing after regular icp tests.I will see how this works.
I know oceamo and coralvue test rubidium.
In the moonshiner method, for example, they write this about rubidium:
''Rubidium is usually always going nearly depletion levels in normal tanks, since it is a costly element and barely included in most supplements and Salt mixes.
The initial dosage is 0.2mg/L and then 0.1mg/L quarterly or 0.033mg/L on a monthly basis.
I have intentionally overdosed Rubidium to 0.7mg/L with no adverse and no better results, and hence, I recommend at least to maintain natural seawater level ranges to avoid low levels or depletion. It is safe to assume that Rubidium can be supplemented even while not part of the ATI ICP results and tests. Coralvue ICP test would be sufficient to test for it, if desired like once a year in addition to the ATI ICP.''
''Usually if not supplemented in any way, this element is always depleted over time but apparently very valuable to maintain at least natural seawater levels of 0.2mg/L''