So I went out and bought the Elos KH and calcium tests to go along with their magnesium test and wow... the other test kits were way off the mark. the Elos kit, with it's REALLY specific and obvious end points showed a calcium of 410 and a dKH of 13. I thought my dKH was low and in fact it's high. Glad I didn't add any carbonate today! Now as soon as my lab grade calcium chloride arrives in the mail I'm set
