BuildASoil's Heaviest amended soil recipe was designed with the Water Only grower in mind. Based on Logan Labs soil testing we designed a soil with more everything. This 3.0 Recipe is our richest soil and is still be balanced enough for most all plants. The goal was a compost based soil without any dirty ingredients that would last longer and push harder. If you are used to Super Soil this will perform as you would expect. This potting soil mix has been the favorite for customers that want everything already in the soil when they open the bag. Compared to our other potting soil recipes this is our most loaded up potting mix. Excellent for flowering and full term growth.