YellowCanaryConsulting
Active member
I have been growing nothing but GG4 for a long time, which was great since I was told exactly how to feed, starting at 300 PPM, then never more than 650 PPM through flower, or it would turn out badly.
Nutrient strength depends on light intensity (and spectrum). Should be able to get a feel for it in veg running dim lights and less nutes. That said I don't even know what a ppm is. There's 3 different EC scales... When I see arbitrary math I tend to ignore it. Because there's no such thing as subjectivity in numbers.