<<snip>> > Simple, fertilizer is measured by weight. 5-5-5 contains 5 lbs each Dave TLCC http://www.tough-love.com >>snip<< ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Not really sure of this statement. If would seems to me that it would make a difference if the N was urea at an ave. of 45 or Ammonium Nitrate at an ave of 33 or Calcium Nitrate at an ave of 15. Muriate of Potash K20 60% or Granite dust at 3 to 5%. Seems like you couldn't use just anything And it would make a big difference in what you started with. What would the homegardener use for fillers? Byron