Hey bleeding. you want to be careful even when using a good two part. They can and will raise your calc and alkilinity way too high if you dont test for these levels. When I first started using B-ionic I dang near overdosed my tank. I assumed that because they claimed it was safe and did not throw the ionic parameters out of wack that I could dose away.
I negelected to test for alk and calc levels and quickly found my alk levels at around 13 DKh. I now test twice a week. Another way I go about it is if I find that the alk is getting too high but calc is still lower than I want, I will only dose part A. I have since found that my system has balanced out and I only rarely have to dose two part as I drip kalk on a regular basis and my levels stay pretty constant.