Is the salifert Iodine test accurate?

kevensquint · Jul 14, 2017

Hi I came across this test kit and wondered if it is accurate to show true tank water values? Or at the very least accurate enough to indicate rising levels due to dosing potassium iodide and thus preventing overdosing? Thanks.

Randy Holmes-Farley · Jul 14, 2017

I haven't used it for many years, but I expect it is accurate enough.

kevensquint · Jul 14, 2017

I would like to add potassium iodide now and then to my SPS tank. Only the bottle says something like 10ml per 50 gallons each week. That seems like an awful lot of a trace element. So I would like to add a fraction of that and see if the salifert shows any reading. If not I assume my lesser dosage would be safe.

clownsrcool · Jul 14, 2017

Sorry to piggyback on his thread but if he ends up buying this test he may have the same question I'm having with it.

In the instructions it lists this paragraph that I'm not sure how to handle

Which procedure should we follow? Does it depend on the chemical makeup of the product we are choosing to dose?

kevensquint · Jul 14, 2017

I would do both but I'm obsessed with water.

Randy Holmes-Farley · Jul 15, 2017

kevensquint said:
I would like to add potassium iodide now and then to my SPS tank. Only the bottle says something like 10ml per 50 gallons each week. That seems like an awful lot of a trace element. So I would like to add a fraction of that and see if the salifert shows any reading. If not I assume my lesser dosage would be safe.

Not sure how the volume leads to a "lot". It may just be dilute.

Randy Holmes-Farley · Jul 15, 2017

clownsrcool said:
Sorry to piggyback on his thread but if he ends up buying this test he may have the same question I'm having with it.

In the instructions it lists this paragraph that I'm not sure how to handle

Which procedure should we follow? Does it depend on the chemical makeup of the product we are choosing to dose?

Either one that you want, depending on what you want to do with the values.

What are you dosing? If iodide, I'd only measure that. If something else, you may want to include iodate (especially if you dose iodate).