I have (2) Pure Power Plants 42 days into flower and I'm using Jacks Bloom. Holy shit a tub of this stuff will last a mofo a few years LOL.
I used FFOF with added lime to stabilize PH and offer some extra cal and mag. I used straight water for a about 2 weeks after transplant then started administering my feedings. It is my first grow while using a TDS meter to monitor nutrient solution strengths so it took me a while to get it figured out to adjust the feedings. They were overfed for a couple weeks in early flower but the PH stayed dialed right in. I water every time with 700-850 ppm nute solution and get plenty of runoff to flush out any unused nutes and replace them with my new mixture, about 30% runoff. This also gives me adequate runoff to monitor the ppm's. I had major cal mag deficiencies after about 2-3 weeks once the organics were depleted from the soil. Once I picked up the Cal-Mag feedings everything is looking good. I also have 2 plants 31 days in and one at 12 days in that are looking nearly perfect with just Jacks Bloom, cal-mag and silica. I like to feed with superthrive every now and again just because their labeling has me hypnotized LOL. My White Widow is having an intimate relationship with Jack, I think. She drinks damn near twice as much and eats damn near every bit of food I can throw at her at 31 days into flower.
Overall I really like the simplicity of using one basic nutrient mixture. Bud development is about as dense as I've ever had before and definitely seems better than my last grow with Fox Farm nutes in accordance with the feeding schedule. I'm not sure about the yield yet, it seems like it might be down at this point but its not going to be anything major. I transplanted the same day I initiated flowering so I would blame this more than anything if my yields are effected. Yield isn't as important as quality for me but its still very important
Thanks for the recommendation of Jacks and I will post some pics of the product when they're finished!