I’ve just ordered (3) 1.5cf bags of Coast of Maine Stonington Blend that I’m going to grow Super Lemon MAC and Wedding Cake autos in. A thorn in my side this current grow is that I don’t think I used enough perlite in my FFOF soil and also in my Pro-Mix HP/Coco Loco medium, so different drainage rates are killing me.
I really need to know exactly what size perlite (large or small pellets) and how much to add per 1.5cf bag of Coast of Maine Stonington Blend soil? 20%? 30%? Your thoughts are much appreciated.