Dave Willis, very interesting reading. Concerning your post on the fish kill in the 2 ponds I was curious if you did an DO reading anytime that winter. Was wondering if the kill was more DO deprived than water temperature related. Here is the reasoning. If you had ice/snow cover for 6 months that is a long time for DO to be sustained at any favorable level. The Koender with a 7-8 inch round airstone even in 20 ft of water at a full 1.5 CFM (I belive 1CFM is closer) and figuring 1000 GPM turnover would mean that the 7 acre pond using an average depth of only 15 ft would need 24 days to tunover 1 time. This turnover rate would have no effect on water temp to speak of.
Last edited by Bill Cody; 01/19/20 06:14 PM.
