Honestly I think I liked the Rock Dust better just due to how easily it seemed to dissolve compared to the Azomite. The Azomite tends to clump/form a thick layer that really plays around with the soil compaction on the top layer. Whether or not this has any measurable impact at this point is beyond my recognition other than it's annoying to deal with. I might switch back but I got a huge bag of Azomite for real cheap so I'll use what I have.
Yeah imo early training is a big part of getting nice colas, assuming you are growing a strain that responds well to topping. I let my seedlings grow 8 nodes and then I start my shaping. I top at the 5th node, leave the 4th, and trim everything below(I like having lots of space between my soil level and the first node). It seems very scary to obliterate half of your plant matter but you'll see them recover over a week or so and it sets you up for at least 4 very nice colas. If you want more
main colas you would just top the 4 main branches that are left to get 8 main tops or top those again for 16 if you want to push your veg further.
View attachment 4153
Then at week 3 of flower, just after the stretch phase has finished I will go and do a really thorough "lollipopping" where I remove any branch or leaf that is below my SCROG. These sites will not get much light and will only produce you larfy garbage buds so may as well get rid of them and let the plant use its energy in areas that get light.