New member here, been running Cyco for 3 full grows, switching from GH line. I can say that grow 1 w/ the cyco line did awesome especially in comparison to the other nuts I've ran in the past starting with FF, then to GH, now stuck on cyco. That is w/o the yellow XL stuff too... Having said that I will recommend using their "kleanse" product at least once every week with just plan water (I use tap and let sit out for a few days) as it definitely adds to the vigor of the plants. No noticeable def's and just lush green errwhere!!
Beginning of last week (8 or 9) water to saturate soil, then wait 30 mins, hit with "kleanse" mix till drains out, wait 26 minutes & vacuum drainage. My first cyco grow I didn't flush at all and was using the recommended dosage and it wasn't harsh, my month cure could also have contributed to the lack of harshness too. I always finish last 48 hrs in darkness, but that's what has worked for this guy. Im using FF OF/HF soil too, just thought I'd add that.