m0useanswered grow question 2 years ago If its works for you I would not change anything in it. It is not my ideal setup but why fix whats not broken right? Many ways to feed a plant.
I myself and not a fan of Advanced Nutrients, I find they cost to much and other options are out there that don't have a track record of shady marketing and manufacturing process. They just happen to have there products contaminated with PGR's or plant growth regulators that are not good for human consumption and they cause the plants to be super bulky, like steroids. I just find it sad when a company get caught doing that, there is no way they just magically formed in the formulation.
I would look into maybe lowering the PH just a tad, I aim for 6.5-6.8 in flower in my soil grows and aorund 6.4-6.5 in veg, not to say a PH of 7 does not work, I just have not tested it out myself.
Other then that I don't see anything else that needs attention.
Looking good none the less, your doing a great job.
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Best Of Luck!