plumsmooth
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I am losing my mind with otherwise perfect looking plants except immediately as soon as I switch to Flower, within 6-10 Days I start to see K Potassium deficiency that usually stays managed and never progressed past edges of lower fan leaves and tips of younger fan leaves.It's a balanced fertilizer. The American style of growing is to blast it with phosphorus, even though the plants only use available P, not absorb excess Phosphorus in flower. It only serves to cause problems with the plant. Cannabis is essentially the same nutrient requirements as determinant tomatoes, but they won't tell you that at the hydro store.
3 gm. MB, 2 gm Cal Nit Week 1-5
3.6 gm MB, 2 gm Cal Nit Week 6
3.6 gm MB, 1.66 gm Cal nit week 7+.
2.5 gm Potassium sulfate+ 25 ppm fulvic acid for flush
Monster yields without "bro science".
But something clearly is messed up. And honestly this is happening with other nutrient mixes as well. And I am completely stumped as to what it could be. My PH is High too but I do not have a trace of Iron or Zinc Deficiency! And I admit I top off very small Power Grower RDWC reservoirs sometimes for 2 weeks even though they are drinking 1.5 gallons per day. But i do that in Veg and have amazing plants with the addition of a little Cal/Mag for the fast growing large plants past 4-5 weeks getting ready for Flowering cycle...
If I can endlessly top off between Reservoir Changes in Veg with 3-4 foot plants then what the hell is going on in Flower as soon as I switch the lights to 12/12?
Is it really possible with all that Potassium in MB that I still need more K. Or -- and tying back to something I read here -- is it possible that I am giving too much Antagonist Nutrients ala Calcium Nitrogen during the Transition. I genuinely believe the nutrient Demand Profile immediately changes as soon as I flip the light. And I am lazy I know and I have modified 5x reservoirs for my Power Growers but I really want to think I can dial in the same perfect Ration in Flowering such that I can TOP OFF just like I do in Veg for a week or 2 without problem avoiding some build up of unused Nutrients that might be antagonizing the system>?