"Remove the top surface layer of soil from the pot or bed and discard it. This soil may contain insect eggs or larvae. Even if you are certain it is free of eggs or larvae, it is best to be on the safe side. I
If you intend to reuse the soil, prune the plant leaving just a small stalk and the roots in the soil. Then pull up the stem up and remove the roots completely.
Sift through the soil with your fingers or a hand fork and remove as many of the old roots as possible. Leaving a few behind is not a problem, however larger root mass will use more of the soil’s energy for decomposition.
Add fresh Pre·Mix™ (5%) and Worm·Humus™ (10%), then moisten and leave in a warm place for at least a week.
- See more at:
http://www.biobizz.com/tips-tricks-2#sthash.xAWZKjHr.dpuf "
That was from their site... Their Allmix Is a super soil that's why they Sell their Premix which is all the amendments premixed and you add that and their worm humus. Hmm sounds a Lot like recycling soil.
Again Not saying Only water can't be done. I'm saying to achieve Optimal results Extra Liquid nutrients need to be added. Whether it's homemade Teas or industry produced nutes.
Alan with Probiotics and grows for Gage Green I believe, uses All organic but goes Heavy on his tea creations providing Even more nutes. themodern.farm says the same thing. And even they say to buy their GroKashi or thus and that.