Hi. I am new to this forum and I hear about the diiferent mixs on here like "Al's". I have grown mostly cherry tomatoes along with peppers in containers for a while now. I have been doing good with a perlite/peat/soil mix using synthitic fertilizer. I am thinking bark is cheap and will do as a filler. How much bark should I use? I want to add as much as 50% or more bark. Is that ok? I never thought to use bark but I plan to expand my garden and want to make a more economical mix and I think using bark will do just that. Again how much is ok? And any other thoughts.