15 to 30 gallon aeration

[Codythompson]

I'm thinking of buying the Williams 22" aeration wand, stone and regulator for the disposable O2 tanks. We will be brewing on a 1bbl but mostly doing 15 gallon batches to start and then bumping up to full capacity. Have you heard of anyone using this setup for a batch of this size? I know the wand won't be long enough but I plan on sanitizing the tube and letting it drop into the conical fermenter. Is there a better way to aerate large batches?

Thanks!