Growth regulators - also shortens the peepee of next generation, like rooting hormones.
It’s always been a big no no - but the question is also about light and nutes, growth regulators is not nutrients.
Where im from, it’s in the same class as pesticides.
I have no idea what the patent pending secret ingredient of Bloom Khaos is, but I’d be willing to bet that it is not of a dubious origin. I’ve heard some people guessing that it’s just some amino acids. Whatever it is, if you go take a tour of the NFTG facility Scott will show it being made and you can see the secret ingredient for yourself. Of course, you’ll have to keep it secret too 
What is the pepe you are talking about?
I think it’s pepe like its “get up and go” vigor . . .might be wrong though 
A lot of info is already in another topic:
Sry peepee, make deformed genetalias, shrimp dick, micro dong.
Think it’s called Endocrine-disrupting or something on english, not my mothers toung. But it’s chemicals that fucks with your hormones, or rather fucks with generations to come.