Ca-Salifert
Alk -Lamotte - use a water syringe from one of the Salifert kits to add your tank water, much easier than looking at a line on the beaker
I like Salifert's Ca - The color change from red to blue is pretty big and a detectable difference. You have to add 2ml tank water, then a spoon of dry and 8 drops agent, then drip the reagent until you see the color change, look at the syringe for your reading and then at a table.
I don't like Lamotte's Calcium kit, 1 ml of tank water then dilute with 11.9ml of RO water - This is the part I dislike. I constantly would get the 11.9 out of the sump, since the RO tank and sump sit right next to each other, You add six drops agent and then drop a tablet, You know in 2 seconds after you drop the tablet that you made the same mistake, again.... If you did it correct, then do the reagent syringe and read the result. Then multiply the result by 5.16 to get Ca ppm. Color change from Red to Purple then Blue
For Alk kit, Lammote is my favorite, 5ml tank water, drop 1 tablet (no drops and shaking) do the reagent syringe and read the result, it's in ppm right off the syringe - Change from blue-green to purple.
