I honestly used it for simplicity when switching from soil to hydro years ago. Time flies, and I’d be dammed if they haven’t perfected a simple cannabis nutrient regimen by now. I understand there is a lot of great options. However the Lucus formula can be used with any nutrient line, and is more focused on the ratios and numbers more so the name of the brand.
Here is the info on the Lucus formula using GH Flora Micro andBloom
“Lucas Formula targets (parts per million) of 100N-100P-200K-60Mg as the requirements for marijuana through all stages of growth. Using 7.5 ml/gal of
FloraMicro, and 15 ml/gal
FloraBloom, 122N-99P-171K-68Mg is achieved. Lucas Formula rounds off to use 8 ml
FloraMicro and 16 ml
FloraBloom, so the N-P-K-Mg ppm will be slightly higher than the previously stated 122N-99P-171K-68Mg values using 7.5ml/15ml respectively. Using 8 ml
FloraMicro and 16 ml
FloraBloom, the N-P-K-Mg values are 130N-106P-183K-73Mg. The
total PPM of the solution will vary depending on water quality used. Keep in mind that there are also other elements in the Micro and Bloom bottles besides the N-P-K-Mg, so the ppm will be higher than if you simply added together the previously stated N-P-K-Mg ppm.”
My trouble is the amount needed. I don’t feel comfortable using 1300ppms on clones. And I never have. I think I still need a better understanding of that aspect, regarding how much of any specific nutrients the plants need at any given time.