Ok, I'm going to be growing very soon, but first I need to make my soil and I have questions. 1. I will be using soil that is in a garden, but are there essential things I should add to my soil? Like perlite or lime? 2. There is a swamp right next to my grow. Can I use the water there or it isn't any good? 3. In the swamp there are lots of dead black leaves. Can I add that to my soil mix? 4. I have lot's of ashes. Is that any good for my soil? Thanks.