Originally Posted By: wbuffetjr
... If there wasn't a benefit of running O2 through a diffuser then I wouldn't think the fish haulers would be running bottled O2 into their transport tanks?? The bubbles in their transport tanks are barely exposed to water at all in a tank that is 3' or 4' deep.

.....


When I buy fish at my supplier, they come in a plastic bag inflated with O2. It extends the time the fish will survive by providing an O2 rich blanket of air on top of the water for gas exchange. I expect the same applies to fish haulers. Their tanks are covered. The O2 bubbles agitate the water but I suspect the real benefit is they provide an O2 rich blanket of air over the water surface.

I could see how injecting O2 into a pond's aeration with ice cover could be beneficial by providing a layer of O2 rich air between the ice and water, instead of just "normal" 20% O2 air.

Perhaps somebody that actually knows what they are talking about will chime in! blush

Last edited by Bill D.; 11/12/18 08:40 PM.
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