According to some loose calculations that I have done for my 1/4 acre pond (estimated to have 423,000 gallons of water) using Vertex's lift rate chart...A single vertex diffuser at 8 foot deep will turn my 1/4 acre pond over 4.3 times a day running 24/7.
For a 1/10th acre pond, the same calculations would allow for runtimes to be as little as an hour to achieve a once a day turn over. I am going to stick my neck out here and say that with the heat you are seeing from top to bottom and the size of your pond (0.1 acre) that raising the diffuser and reducing runtime will be required. I look forward to your results and, by no means, make any decisions based on my ramblings.
I wonder where kramedt is? He'll be surprised at the storm he has created, however, the timing was perfect!
