I'm considering 1-part nutes, more for others than myself. Nowadays I have pH control kit and EC meter, but not everyone does. Like, my mother. And those add-ons are expensive.
I want to love the GH MaxiGro dry nute, and should probably just buy it and try it. Their FloraMato had serious pH issues though. Not only did it mix too acidic, it drifted later, really badly. Granted, a pH control kit is fairly cheap, compared to an EC meter. But at least the 3-part nutes, at lettuce strength (which is 0.8 times the standard 3-2-1 formula - I make it with 12-8-4 ml grow-micro-bloom, adding micro to the water first of course) is and stays a perfectly serviceable pH with my tap or rain water.
But then there are these new AG liquid nutes... Their lettuce/herb/flower formula (4-3-6 NPK) is almost exactly the same as basic vegetative Flora 3-part series, divided by 4. As in, mix up vegetative 3grow-2micro-1bloom, and the NPKs add to 16-13-24. Which is 4x the concentration of 4-3-6. Is it possible this is made from Flora 3-part, diluted and then mixed together, to prevent nutrient lockout?
I haven't heard anyone say these new liquid AG nutes grow better or worse than the old tablets.
I haven't seen any liquid 1-part nutes online except FloraNova, which sounds more tarlike than liquid.
MaxiGro is 10-5-14. FloraMato is 10-6-18. Both a lot lower on P than my usual lettuce mix. MaxiBloom is 5-15-14, fwiw.