I'm planning to grow a couple veggies in some buckets but I'm having trouble finding the correct ingredients for the 5-1-1 mix. I've been searching through the posts trying to find substitutes and have come up with a couple ideas. I have found two sources of fines. One is from Lowe's and it looks like the are have pictured from posts before. Another set of fines is a product from the company Coast of Maine. Their fines are really fine and are composted, like dust (double ground) but there are still tiny chunks. Could I replace this product with the peat and just use regular fines with the composted pines and perlite? 5 parts regular fines, 1 part composted fines and 1 part perlite. Any input would be much appreciated.