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Name: Michael M.
Status: other
Age: 40s
Location: N/A
Country: N/A
Date: 2000-2001

I am tring to incraese the level of oxygen in water under these condictions:

1. temp range 74 to 80 F

2. pres range is what ever it is today at about 1000 above sea level It is a fish tank. I know by ejecting O2 in to the water it should increase. If my memory still works, this level fixed base on Hennry's law. Thus under these condiction it will not go above about 15mg/L no matter what I do.

The solubility of O2 in water at 0 C. is about 5 cm^3/100cm^3 water. Increasing the temperature or adding salts to the water decreases the solubility. You are correct. Short of increasing the oxygen pressure, there is nothing much you can do to increase that no matter what you do.

Vince Calder

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