right now my radion is set at 48%. i plan on increasing the light up to 70%. 3% every 2-3 days. i honestly do not know why my Ca is so low. :headwally: i am using aquavitro salinty salt. according to BRS and their 2 part recipe, my calc should be 450 by tomorrow.
What test kit did you use to test Ca? Funny that I thought I had the same situation when I first started using the API test kit, but later I found out that I didn't shake the solution enough between each drop.