I got a question for you guys. I just had my 3 year pond tested by the County Extension. The SW end of the pond Ph was 7.1 and the NE end was 6.2 So I will add more lime the the NE end to about the center of the length to get them both in that 7.0 - 7.5 range. The pond is the shape of a bent pointer finger. The thing I don't remember is the range on alkalinty. Both ends were 25.
Thanks guys.