Pond Boss Forums INTRO Questions & Observations affordable DO meter?

Thanks, Eric! That's encouraging to hear. I knew that watermeal often causes fish kills in ponds it's been in a while, and the lack of plankton and resulting low DO makes perfect sense as the explanation. As much watermeal as there was covering these two ponds, I guess that could be a lot of oxygen being taken up by the decay.

What's the time frame I should expect as far as the DO beginning to get back closer to normal, fish-supporting levels? Do you think I should remove the trees from one bank of each pond to facilitate wind movement across the pond?