I found a place called Pro Grow that puts together planting mixes for professional nurserys. I talked with a guy there and told him of my project , he said he had a couple of mixes that would work or he could custom make a mix according to my needs. His current mixes sell for like $46 per yard. So here's my question what is it that the perfect pepper potting mix needs to provide? What is it that make peppers happy. I'm looking for some of you old hands with tons of experience at growing out peppers in pots. This place is well respected with all the major nurserys and I'm intrigued by their ability to make it the way I want it right down to the PH so what things should I look for in a good mix?