Bill,

Thanks for the info. I checked my DO level again this evening (at 6 pm, water temp 59*F, and at 1' below the surface) and was getting readings in the 7.76-7.90 mg/L range. The pond is only about 2-3 years old, and I'm concerned that the readings are too low, for this time of year. I do not have an aerator set up (I plan to, as soon as I get electric to the property), but the pond receives a very good amount of wind.

Also, I have a question about calibrating the meter. I've followed the directions and have replaced the membrane and solution and have entered the correct altitude (660'), but when I place the probe in the moistened storage well, I get a reading of 7.1 mg/L (68*F) which is 77.6% saturation. Shouldn't this be 100% saturation?

-Chris
1 acre pond
Currently managing:
FHM, GSH, GSF, BG, PS, RES, LES, YP, SMB, LMB, HSB, RBT, WE, CC, FHC, and Grass Shrimp