VIDEO: The Basics of Starting Lettuce Seeds in Rockwool for Hydroponic Growing
This video covers the basics of starting seeds in rockwool. It difficult to underwater or overwater when you use rockwool, the fibers retain water very well AND hold oxygen in the pockets between the fibers. So start some seeds now! Products used in this video are available at Amazon: Rockwool: https://amzn.to/2Vav7Mi Ph up down: https://amzn.to/2JfFH27