Originally posted by BLUEMANDJ
I have a hood with 2 blue and 2 white lights. The temp is getting up to around 80 degrees. What are some of the ways to pull the temp down to around 74?
I haven't hear this before but when I visited Denver before there were several things that were different because of the higher altitude. For instance, carberator jets on cars were slightly different because of the thinner air. Dispite that I bought a car there and drove it all over including living at sea level.
I think what the LFS is talking about is not that the water is any different but the fact that the air is thinner (at a lower pressure). Therefore, at the same temperature, there is less air in the water. The amount of air disolved in the water is a function of temperature and decreases as temperature rises. Therefore, a lower temperature at 6,000 ' above sea level would have the same amount of disolved gasses as a higher temperature at sea level. And this can be probably offset by increasing the gass interchange through more air-water area or circulation.
I maintained numerous tanks at Rapid City south dakota in the late 70's. 3000' altitude. They seemed to handle lotsa fish just fine. But then I did not use heaters and did not use heaters wherever I was living at the time. So the tanks were more or less room temperature plus some light related heat. Probably around 78-80 degrees.
I think you will have no problems at 83 or so. The decrease in the theoretical fish capacity you probably will not notice.