I think it’s also a question about where you are, how is your water source and are you using RO filters.
If your using RO filters, you will need more Ca and much more Mg. I already add extra Mg to the 3 part, as many strains require more then what’s in the basic 3 part.
I run a rich tap water, where my Ec is already 0.9 after pH adjusting alone.
My water company, make a public analysis of the water. I can print that of their homepage, and I know what’s already in the mix to begin with.
All thouse sugar based additives, are IMO just for feeding the beneficial cultures. As the plant as far as I know, can’t uptain sugars thru their root system. Beneficial bacteria and mycelium on the other hand, can eat sugars and “waste nutes” and they help the plant uptain nutrients in a wider pH range.
So they have an effect, and I don’t think it’s stupid to use BB cultures and mycelium. They can be very helpfull in many ways, but I don’t feel the need to buy bloom boosters and other stuff like that to feed it.
My BB culture is natural occurring, no need to feed it. It lives of waste nutrients in my reservoir, converting it back into plant food. When my grow reservoir, smell’s like my aquarium water, I know it’s really good
When I used mycelium, I fed it cheap molasses from the farmers shop. Dunno if they feed it to pigs, or cows or what ever. It was dirt cheap!