Flipping Day or Flower day? Nutrients

there are several studies that show that going over various concentrations don't do anything but waste fertilizer.. "Boosting" usually doesn't have an effect unless you were underfeeding prior to that point. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8635921/ -- among other good sources of information.. google is a good search engine. One note: in this study they are using N-sources unlike that used in soilless/hydro nutes (or something to this effect, if slightly off in explanation). You only need 110-130 ish PPM of N with readily available sources that don't rely on a microbe or whatever to break it down before it is plant-available and can enter through the roots. They mention this in the report at some point. They also point out the limitiations of the study, but it paints a good picture, nonetheless. Force feeding a plant more than it can use doesn't help anything. Doies a plant need slightly different formula in bloom? probably, but nothign like what these nutrient companies suggest. soilless / hydro 1-1-2 NPK ratios 4-2-1 K-Ca-Mg ~100 ppm S All adding up to 1.3-1.5 EC, possibly even higher in some cases, but same ratios needed. i find i do have to drop N about 10-15% in flower, which i don't consider a drastic change... I also lower Mg in flower closer to the suggested ratios above... i give more prior due to how i see the plant react and grow while trying i different levels and maintaining levels everything else as well as i can. No idea if i'm right, but having good results so far. these are not written in stone, they are loose ideas to use as a tool to hasten trial and error as you adjust formula and hopefully get better results or revert and retry again until you do. consistency is required not to create a fog of war... easy to misattribute cause to the wrong effect if changing several things at once.. personal bias typically dictates what people want to give credit. it's messy and complicated... these companies don't even hire a chemist, i bet... stick to knowledge that is based upon many, many people working in professional ways to figure things out... far exceeds any 1 human's perception. Another interesting read that pokes hole in the generally accepted nonsense that you need to drasticalyl amp up P in flower... https://www.cannabisbusinesstimes.com/article/balancing-the-nutrient-equation-cannabis-cultivation/