You need to bump the nute ppm up to 300. They're just hungry. Your nutes have enough Ca and Mg for now and I grew 30+ tubs of plants in DWC before ever buying CalMag and use very little of that now. I also always use RO water so it was totally devoid of any minerals.
Generally the pH tends to rise as the water level goes down so when I topped up every 3 days I'd test pH and ppm after I filled to the proper level then use a syringe to measure out small amounts of nutes to get the ppm back to the target level. As the plants got bigger I'd just set my target at a higher level and hit that. pH would usually be around 6.2 so I'd put 5 or 6 drops of conc. sulfuric acid in and it would go down to maybe 5.2 then creep up again. I don't do a complete nute change until the stretch is done and set my ppm about 2/3 of what I had it going into the stretch as they stop feeding so heavily right after the stretch is ove about 3 weeks after the flip. When I was getting ready to flip I'd add extra bloom nutes with the regular dose and a half dose of Big Bud about a week before flipping and have pistils popping out within a few days of the flip.
You should use less of the Bloom in your mix while the plants are vegging. The general ratio to use 3 - part nutes like that in hydro is 3-2-1, G-M-B then reverse the ratio after the stretch is over dropping the Grow after week 5 or 6 and feeding like the Lucas formula with a ratio of 1-2. M-B.
I've been using AN for 16 years and the pH Perfect stuff for a few years now and it sure is easy compared to the earlier nutes. Rhino Skin and Big Bud are the other two AN products I use regularly. Any old CalMag will do tho I like it with added iron. I'll crush up a couple of zinc tabs and toss them in there too. Something with extra sulfur in the last few weeks of flower after stopping the Big Bud helps with resin production as well. I've been using OverDrive but not impressed so won't be buying more. Same with the Bud Ignitor tho I've only used it in plants in pots and not in DWC.
