Has anyone used any type of organic fert.? I got some info on some organic fert that I had seen in turf, and I was curious if their any good or how good they work. Also they offer an areating fert (either granular or liquid), how good is this? I had one areate job last year that was quite large, and the ground was so hard that it broke every tine on the machine. The machine was some new ryan ride on areator. Nice machine, lots of power, but I was wondering if I used something like that fert would be easier and cheaper. It'll get a little costly if I've got to keep replacing those dang tines.