I'm trying to figure out how much and what kind of fertilizer I need when I seed some TTTF in a couple weeks. I guess I need to do a soil test to find out, so my question is can I use a store bought soil test kit and get good results? The one I am looking at is: http://www.lowes.com/lowes/lkn?action=productDetail&productId=214248-83666-1210&lpage=none I didn't know if I should just apply starter fert. but I started a thread on that but didn't get any response. I was just wondering if these are accurate and how long does it take to find out the results?