When I first use for 1 week my kh and calcium high.... then I stop for 1 week then after that I buy sps 5 type and put in then kh drop to 5 plus the. I restart back like 5 mls every night then it stable at 8-9 dkh then I drop my dose to 2 mls every night then it’s stay at 8-9 till now Sent from my iPhone using Tapatalk