Hey @Randy Holmes-Farley just mixed up my solution. Dosed 25 ml to my tank, which raised my alk 1.2, in about thirty seconds, this is okay right? Also, my tank consumes about 2 dkh per day, so will I need to up the dosage? One more question, my calcium was 440, I didn't test it after dosing. Is it okay to keep dosing the same amount of calcium as I am alk, even though consumption is different? Won't my calcium eventually get to high? Thank you in advance.