My cost per bag was about the same as yours Bill. It will cost more this year due to the cost of raw materials. I use both water soluble and bagged (regular) 0-46-0. The bagged goes on platforms (can't contact the pond bottom). The bagged is lees expensive but not as strong or easy to use. This is a formula I have worked out for our ponds based on years of experience with their water quality and after soil and water testing. As a result I use only about 10% of the recommended rate of water soluble and mostly for starting the bloom and for a quick shot in arm if the bloom dies off to much. My estimate is I cut my cost by about 30% over just water soluble.

Last edited by ewest; 03/04/08 03:08 PM.