Hey cecil,
I've seen the pictures of your ponds, a real neat set-up.
When you say your pond temps. are in the low 60,s what depth are you measuring them? Also what do you mean by a packed column?
It's time for me to hit the sack i'll check-in tommorrow, see ya.
Surface down to about 3 or 4 feet. Don't have a pier on the pond yet so the only way to get the complete temp profile would be to use a boat or something. However I may add a pier very soon.
Here's my packed column. It consists of five gallon buckets with plastic media in each bucket (held in by plastic screen in thw bottom of each bucket). The water drops through via gravity after being pumped up to the top from the well. The plastic media breaks up the water blowing off nitrogen gas and carbon dioxide, and adds dissolved oxygen. Most packed columns are closed tubes and some actually have a blower that blows air up to enhance oxygen saturation. The open space in between the buckets enhances D.O. saturation too.
