Pond Boss Forums INTRO Questions & Observations Cooling pond water

Ok so my math says this.

80X150X12 is 144,000 cubic feet,

144,000 cubic feet is about one million gallons even,

You then have about 8,400,000 million pounds of water in your pond. 8.35 pounds per gallon.

It takes one BTU to raise or lower one pound of water one degree.

If your pond needs to drop 10 degrees you would need about 80,000,000 million BTU's of cooling.

My pond is about one million gallons as well and will end up at about 75 degrees in the summer months. To fight that I would need to have about 80-100 BTU's of circulation through a loop just for the summer months to keep the water around 65 for the summer.

Now the ground stays at about 53 degrees. If your water is 75 degrees for it to come out at 65 you need a constant exchange of 10 degrees. Your pipe in the ground would need to be long enough to get the exchange to happen at your flow rate.

Maybe some one could give a flow rate for a natural spring that keeps a million gallons at trout temperature?

Cheers Don.