I made a trip to the local hydroponics store yesterday and restocked on rockwool, perlite, and Promix HP, for a lot less than available online. I should be set going into the winter. Something about seeing this much coarse perlite makes me giddy. I also got to talk in detail at the store about the latest supplemental products and advances in LED lights. Thank you cannabis industry, for making indoor growing easier on many fronts.