Sorry i meant there additives of theirs to use to make up for cannazym rhizotonic pk 13/14 and canna boost accelerator?
A few months late to this conversation and I hope you are still using H&G. I have run H&G since I started growing in 2015. I started growing in rockwood using Aqua Flakes, now I grow in coco. I have tried several lines, out of curiosity, and H&G performs just as well if not better than others.
To answer your question: I use A & B, Multizen and BudXL. I was religious about Roots Excel when I first started using H&G but now I just use a little myco during transplant. The two enzyme additives from H&G (Multizen and budXL) do what is needed to keep the root zone healthy.
In addition to the base and the two additives I mentioned above, I use monopotassium phosphate in place of
Shooting Powder.
I don't use anything else, but I run DTW coco in 1 gallon pots using drip irrigation. I am constantly feeding to runoff, many times a day. Lower poms, no organics in the rez and the drippers don't clog.
The main difference I notice in Canna is the low nitrogen and the low potassium compared to House & Garden when running both complete lines.
I hope you are still in the game. Peace.