Thank you for your input esshup. I actually have the test results, as follows:

(ppm)
Calcium 53
Magnesium 8
Sodium 51
Potassium 9
Boron 0.04
Carbonate 0
Bicarbonate 199
Sulfate 60
Chloride 40
Nitrate 0.02
Phosphorus 0.05
pH 7.32
Conductivity 466 umhos/cm
Hardness 10 grains CaCO3/gal
Alkalinity 163
TDS 420
SAR 1.7
Iron 0.03
Zinc < 0.01
Copper <0.01
Manganese 0.01

Regarding grass carp, that was suggested by A&M. I have a bias against it as I've only known of examples where it basically ruined the fishery. Seems there are lots of professionals using them that should able to get it right, but so often it goes completely wrong. My sample size is limited and therefore inherently biased.


2.4 acre pond N Ft Worth/Keller