Lugol's Solution Question

[fishytime]

Originally Posted by rayjay

I say again, there are NO test kits for any form of iodine that can ACCURATELY tell you what the levels are. That includes the Salifert one.
This information comes from Randy Holmes-Farley and Boomer, both of RC, and both knowledgeable on the topic.

any hobbyist grade test kit for anything(Ca, Mg, Iodine) will be at best an approximation on which to base results.....at least its somewhere to start

[rayjay]

Yes, I agree that they are not exact for any elements. However there is a wide degree of difference in accuracy in say, calcium or magnesium, compared to the accuracy of the test for iodine.
And, the problem is exacerbated by the fact that a little too much iodine and you can poison your tank, whereas a little too much calcium or magnesium might cause some precipitation but it's not a potential doomsday like the iodine MIGHT be.
I guess it boils down to first of all, if one believes dosing iodine to be necessary, and then if so, does one trust the test kit for that purpose.