Question on test

[Reo2140]

I recently started to use Red Sea Magniesium test kit my question is how do I read it. Everytime I use it I go down to 3 on the trident just wanted to know how to match it up..? If anyone can help explain it better

 

[Spare time]

So if you go down to 0.3 on the syringe, that means that 0.7ml of reagent was used, and thus you look at 0.7 (titrant used [ml]) on the reference card. That would indicate your magnesium to be at roughly 1400ppm. Red sea kinda makes you read it backwards , which is something I am not sure why they did lol