I have also just started a full zeovit system as well, but I cycled my tank first then I started the 14day zeo cycle once the nitrogen cycle was done. Took about 4 weeks. Besides the big 4, I have added from the start into my dosing regimen, Coralsnow, Zeozym, Biomate and A-Balance. These are all supposed to help with algae/bacterial issues that can arise from carbon/bacteria dosing. I have a bit of algae now, because I let my po4 get upto .08 with a hanna, so I've taken the necessary steps of cut back feedings and uping my flow on my reactor. If I was you don't worry about potassium yet, the system is so unstable for the first 6mos to a year and I doubt the corals you have are using up all the potassium to warrant additional dosing of it. Just let your system do it's thing and stabilize before jumping on the dosing wagon. Just my opinion!!