Has anyone used the Elos Pro line Potassium test?

[spawn]

I'm using tailored Aquatics, my k levels were at 250 mg/ltr as well. I've been dosing up since sat. So will check levels again tonight, & be able to tell what kinds of gains I'm getting with a daily double dose. Will post gains later.

Re-tested after 48 hrs of dosing 10 ml per day on 55gl GWV & levels have risen to 280-290-ish also added 2ml of PKB this am. so a change of about 15 mg/ltr per day. I may slow it down a little bit more, so another week+ of slow additions to get to NSW levels. A notable change in the tips of 1 of the purple corals I am trying to darken up. Hopefully this will continue.