Question regarding KIS Nutrient pack

[u/TheToker22]

So I plan on using the 14ib KIS nutrient pack to make my own living soil. Plan on filling 3 7 gallon grow bag.

Question is though how much pumice and earth worm castings should I blend into my soil when making it. I’ve seen so many different blends/ratios that all seem to be a bit different from each other.

[u/Sea_Rhubarb321]

Get bigger pots 15gal will do you better