Rex - I probably should get the meter out to either confirm or deny my concerns. Even though they are deep, they are only about 2/3 and 1/3 acre each. I've got upwards of 10+ inches of ice so I'll have to break out my little 1" spade bit to get thru. I think I can get the probe down thru a small hole. If not I'll break out a mattock. No ice auger here.
Since the ponds are 3 years old I was gonna start some serious culling this year. I don't believe they are over populated but I could tell last fall the native BG had lived up to their reputation of high fecundity.
Hopefully nature hasn't done the culling for me already!!
Chuck