Here's a link to their calculator -
nutrient-calculator/" target="_blank">http://www.house-garden.us/nutrient-calculator/
I have a 12 gal reservoir and I did not change any of the other defaults. The reason why I'm confused is that the store I bought the
nutrients from had a different version of this calculator. I can see that the math works out to the same quantities of A & B but, as you can see on this PDF they say to flush the system only in the late stages of the flowering cycle.
Store's PDF Feeding Schedule
GoodGilligan