API - Alk
Elos - CA and Mag
May try Salifert next, seems like syringes may be easier and more accurate than counting drops.
Some tips I have encountered
- instead of the test tubes they give you, Pharmacy or little plastic cups/containers seem to mix and swoosh around better. Test tubes, you have to put cap on and invert several times
- shake each bottle before use, before uncapping, flick the top of the bottle a few times so there is no fluids stuck in the nozzle, also, after opening cap, squeeze a few times upright to push out tiny fluid/bubbles so the nozzle is clear
- if there is any fluid on the outside of the nozzle, wipe off
- it is most important to be consistent. Elos readings may be different than Salifert, but just as long as you stick to one, and you get consistent readings and adjust water parameters accordingly.
- before, I had free water tests for the first few months at my LFS (only 5 min away) before I got comfortable doing it myself. They used Salifert, and their readings was just a little off to my Elos.