STG Loose Fill can be used to fill - Bato Buckets, Dutch Pots, Grow Bags, Net Pots, Stacking Vertical System Growing Tubes and Nursery Pots. Designed as a superior alternative to loose media and granulated products, including Granulated rockwool, coir, perlite, vermiculite, and expanded clay. The STG Advantage: • Lightweight - lighter than granulated rockwool (rockwool granulate weighs 3#/sq ft - use this for your calculation) Sterile, clean and hygienic • Optimal aeration and water retention • Quicker germination and better yield • PH neutral • No conditioning or pre-soaking • No salt build-up • Significantly lower freight costs • Requires a fraction of storage space