Good Iron test kit?

["White, Jeremy" <jeremy.white at intel_com>]

Can anyone recommend a good, inexpensive Iron (Fe) test kit? (And where to
mail order it from.)

The one from LaMott is $70, and currently outside my budget.

I am currently dosing PMDD, and although the black beard algae has currently
subsided, I now am producing lots of green hair algae.  (And some clumps of
spiderwebby black hair algae.)

I think I should be monitoring my Iron more closely.  Isn't the test kit
necessary for this?

I am pearling like mad, and my chain swords are growing quickly (and
doubling in number.)

34 Gallons
Kh 3
Ph 6.6
PMDD - 6 drops daily
~90 watts light.

-Jeremy White