Hey guys, I can't afford to do my entire grow with the expensive soil mixes like from Fox Farms, etc. What I'd like to do is make my own soil mix, in bulk, from components I can get cheap locally. I can get 4cu ft of perlite for about $12 and a bushel of peat moss for about the same. However, when I got to Lowes or HD there are a bunch of different options and I'm not sure what would be best. A lot of them are 'pre-fertilized' claiming their soil mix will feed for months. I'm pretty sure I should stay away from the 'pre-fertilized' mixes since I'm going to be adding my own nutrients. The same with the mixes that already have perlite added. So once again, what soil do you guys recommend that is carred at either Lowes or Home Depot?