No one magic pill I agree.I worked for a few Licensed Grow Ops in California so I got to see a lot of nutrient and amendment lines come through and get tested.
My personal opinion is that 99% of the "amendments" don't really pertain to home growers. Almost all of them promise increased dry weights and some of them even somewhat deliver but we're talking about 1% - 3% improvement with all factors at peak.
1% dry yield improvement is a big deal when you're growing 250,000 plants like the LGO I last worked at but for a tent grower it's not worth even thinking about.
Too many people are looking for that magic pill/nute/amendment that will improve their yields markedly. Sorry to report that up until now I haven't seen it! Again, IMO, it's more about optimizing the basics involved.
But without life in the root zone my girls wouldn’t be able to get enough nutrients to grow as big and healthy as fast as I like.
So it may not be a magic amendment but really like the combination I use.
Cheep easy and very helpful part of my grow.
Just like they used to say about America Express “ Don’t leave home without it”
Stay safe
Bill284