scott not sure what you are using. The water soluble is the same as what I told you about back this late winter. Not sure what you have but it is not $15/bag I promise. It needs to be applied across the pond not the creek. If indeed the "good stuff" how much did you apply, you may need only 2-4 lbs/acre in your good alkalinity water.

Greg Grimes
www.lakework.com