You could try some beneficials like great white or something similar
with tiny amounts of molasses to feed the soil and the beneficials.
I try to give molasses(1-2mL/L)once a week with great white (1mL/4L),
I mix the molasses with water and add the great white and water as normal.
When I transplant from the solo cups or whatever I've been using I like to
sprinkle the roots and transplant hole with great white, gives the roots a huge boost.
I've been getting huge root balls doing this and the plants have gotten
alot bigger than in the beginning since I started using great white. I also
use some kelp me kelp you from sprout to the start of flower (1mL/L)..
Hope this helps👊👊
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