Jixxxer, I tried that got 5 bags of pellitized gypsum filled a piece of 4 inch pvc pipe capped it and hooked up hoses to fittings on the ends. I then proceded to run water through the tube and spray the resulting mixture into the pond. At the same time I got 2 mason jars of pond water and put about 1/8 tsp of gypsum in one and shook it up until the gypsum was dissolved. I waited and waited for results and actually think it looked worse. Then came the bad news I read Brian's post under muddy water "Do not use pellitized gypsum whatever you do" and knew I goofed! After 1 month the plain pond water had settled in the jar and was crystal clear with a mud film on the bottom and the gypsum jar was still opaque. Read his post and make sure it is powered gypsum and looks white.
Bob
