I wish I could say I knew something about these tablets but because of the volume of fish they are designed to help support I've never tried any. They are designed to help transport a few dozen minnows in a few gallons(or less) of water.
The best source of aeration would be dependent on how many fish/gal of what size. Best put in lbs per gallon.
Species is also a factor as well as water temp-of course you already know that.
As for the highly saturated Ice, that's in a static condition and the lower temp will help more than the melting higher DO water-it's used as fast as it melts.
If you'd specify what you're wanting to do I could make some suggestions??

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