So you're into the third week of Veg by what I like to go by and only two weeks into their new bags with fresh soil. I think it's smart to buildup the beneficial microbes and mycorrhizae while you have the food in the soil. Microbe Brew, Kangaroots, Kelp Me Kelp You are all great products from them that I have found to work very well. Big Bloom is a good product too, just a bit expensive per app. Orca is a great product to introduce beneficial bacteria and endomycorrhizae. The relationship between mycorrhizae and the root system is too valuable not to boost it as best you can.
I think it would be smart to drench the soil with a pH 6.0-6.5 pH solution with some beneficial microbes. Let the roots reach to all that water. Once they drink enough to the point the top of the soil is dry (should be 4-5 days) do the same thing again, let it dry back, then feed them the general feeding strength of Grow Big and keep using the Big Bloom and beneficial microbes. Make sure you test any solution after you mix the nutrients in and then adjust the pH. Most of these nutrients will adjust the pH. For 5 gal bags you should get to the point where every 3 days they'll need water/nutes and that's how you'll know if you're giving them too much or not enough IMO.
A good article to read. There's a lot of information out there about the benefits of mycorrhizae and the symbiotic relationship with the roots of plants. The better you can develop their root systems, the better they will grow.
Mycorrhiza and Cannabishave a symbiotic relationship. While cannabis can grow without mycorrhizal fungi, it is widely considered an obligate mycotroph, which means partnering with these fungi will certainly contribute to maximizing the plant’s genetic potential.
www.edrosenthal.com