hey, i just read what you're feeding, can you give me a breakdown list of in flower feed on the yellow plants? ph/ppm/nutes used/quantity, such.... been there done that so many times i'd love to see if i can help.
as far as the booster i spent all night looking at HR shit, and +size does seem like the way to go, and smarter as far as a "boost". the key to any MPK boost ive found is kind of hard, you have to hit them right BEFORE they start shooting growth so it will help promote it, while most people use it when that nug stage is already done, so they're adding immature glands and pieces of the nug to something that was trying to finish (week 6-7 feeds for example)you see this all day in huge rooms pumping out nugs, either from over feed like this or they just keep the Co2 running for the sake of a perpetual.... where as +size is also a secretion agent, so you use it for most of flower, weeks 3-6. while the plants are booming youre feeding them what they need.... im getting more sold on that the more i think about it. makes total sense. bloom boosters first couple weeks and last couple are absurd. assuming a plant grows perfect like that, or if you do more than one strain, just a headache cause youll feed the MPK based on week or time not nug status or growth, ya know? anyways sorry to rant in your thread, just been planning the last week on switching up nutes, and possibly getting some shit more readily available to the plants
but as far as mixing water, its water/PH correct to your zone/ Cal/mg (if used)/ BLOOM BOOST, then measure EC and use base to bring up to your desired PPM, i usually let it bubble for like 30 mins then i'll throw in some bennies or something (veg, early flower and stuff)