Wouldn't that mean GH Grow is "the same" as GH Bloom? Same salts, Nitrogen, Phosphorous & Pottasium right? Wrong. If they were the "same" you could swap either out for the other. Not a huge fan of GH... but its does work, it's cheap & found everywhere. Hearing ppl say to use Koolbloom immediately upon entering 12/12. Bad idea. There's a reason GH warns against this. Your plants don't need/want it until they're ACTUALLY flowering... not transitioning under 12/12 lighting. Did from strain to strain, but especially with 12+ week sativas, do NOT give Koolbloom until you actually start to SEE flowers. You'll fry& shock em, otherwise. And at the worst possible time. You want uninhibited, full powered, healthy, stretching growth when you switch to 12/12. Don't do anything to stunt your plants at this critical stage. Veg lays the foundation for how much bud a given plant will produce. Think of your 1st week in flower as an extension of veg. When you do start adding the Koolbloom, start at 50% rec dosage. Less with finicky or slower growing strains. Bump it up 10% each week until you start seeing burnt leaf tips... then give a properly ph'd, pure water flush next (can still add mollasses if you're using it), and drop the Koolbloom back down to the last "non-burning" dosage. Through experience, I learned to start at 50% strength in week 2 of flower, increasing to 70% by week 4, and that's as high as it goes. The dry Koolbloom I keep at 50% - VERY bad to over use the dry. It's a ripening agent, and unless you have waaay heavier feeders than I've had, it will cook your girls to a crisp if you use the full recommended amount. To be clear - the liquid and dry Koolbloom do work well. But less, is DEFINITELY more, so don't go crazy with it. Also want to add - once you feel comfortable with the GH flora line - I recommend upgrading to something like Cyco Platinum's basic lineup (just like Advanced Nutrients & most others, Cyco has several products that just aren't needed or worth the cost), Grow More's "Mendocino" lineup is an excellent & inexpensive option, too. If you're interested in this sort of thing, when used properly (not too early!) their flower hardener is the best on the market, imo (Mendocino Avalanche).
But the best cannabis nutrients I've ever tried I my life, that flat out SHAMED every other nutrient line by comparison, is Coots organic soil recipe
Takes more work to get going with it... def a pain for the apt grower. But I have NEVER - before or since- seen my plants respond better than they do in a properly cured Coots mix, no till soil. In nearly every way, I prefer it to ANY bottled nutes. They finish better than they ever have (quality-wise)with zero deficiency/toxicity issues, and once you have your soil mixed, it gets better and better and better with each grow. No need to buy more nutes... just a small amount of soil amendments added between crops
SO much easier to take care of once you get going. Just adding water, throughout. All my most potent stress cabbage has been grown this way... even had a indoor/greenhouse comparison grow that ASTOUNDED us, at how much more noticeably tasty & potent the greenhouse clones in Coots Mix were, than the indoor clones grown in soil with synthetic nutes. Buuut... it IS a bitch to do in an apt, so... *sigh* I'm back on the bottled nutes for now