These questions apply to Florida climate and mostly sandy conditions. Lawns usually are St. Augustine, with a few being Bahia or Bermuda. Some have irrigation and frequent fertilizer contributing to a lot of thatch and stolons running over the top of the turf. ---------- When core aerating, how many plugs per square ft is considered... acceptable, optimum, excessive/unhealthy? Are most aerators set up to provide optimum results on 1 pass or is 2 passes recommended? ------- When combining a spring aeration with fertilization(granular), should it be done in 1 trip? Fert. before or after aeration? Same day, 1 week before/after? Does the fert. need to be modified from usual spring formulation as a result of aeration? (lean less toward N and more toward P&K?) -------- Somewhere, I've seen that St. Augustine (and variations) have some special considerations..... "consult a lawn care professional" if I remember correctly. How might aeration technique differ for this type grass? ------- I'm planning on starting off with something like this aerator. It will be modified to fit a custom 3 point on back of a old Cub Cadet 149. Any problems with this setup?