@Flipper I noticed you had a MC question in another thread and I was going to post this here already and thought it might help you.
First of all I always use a vendors entire line. The products are designed to work together; even though GreenLeaf says you can grow using MegaCrop alone I add in all of their other additives except the growth hormone regulator (I don't want that in my meds).
I run a drip to waste system in rock wool cubes. My drippers run 8 times per light period two hours after lights on to two hours before lights out. The goal is to achieve a 20% run-off of the total volume watered in one period. I have a three day cycle on the nutrient strength in my reservoir. For example day 1 starts at 100% strength the water level in the reservoir is maintained by a float valve from a top-off tank of PHed water. As the garden is watered the strength of the nutrients in the reservoir is diluted so by the end of day 1 it is about 88%. by the end of the second day it is ~ 70% and by the end of the third day it is ~50%. After the last watering on the third day I add nutrients to bring it back to full strength. It takes about 40% of the original nutrients to bring it back to where it started the cycle. At the end of the 4th set of cycles (12 days) I drain the reservoir and start fresh.
I ran my hydro style of growing at 80% of GreenLeaf's chart and had great success with it as witnessed by this grow. This was my first run of GreenLeaf Nutrients. In the next grow I will reduce the MC in favor of a little more Bud Explosion (P,K). You can download a spreadsheet I used for this grow here
https://jmp.sh/3ZEGICc
The PPMs in the spreadsheet are off their chart and not calculated or sampled. Here is what it looks like:
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