Don't know if what I do is right or wrong, but it works for me. I like to spread-out the foods and micro's, with freshwater waterings inbetween. (if necessary) This way I can better monitor the effects of the feedings on run-off ph, and the plants themselves. Drops my ph a bit too much if all mixed-in together, too.

If the plants are receptive, can sneak-up on the max recommended dilution, over a few weeks time. (on mature plants) If unhappy, they'll let you know pronto. Wouldn't just go for it all at once, tho.