Because anecdotal evidence of the effects of adding helium to decompression gases is sparse, I took the middle road. Bill Mee is apparently using heliox for everything, while George has not switched to He in the 70 foot gas. I split the difference, and use 35/32.5 and 50/25. This appears to be working well. I will wait for further information to see if bumping up the He content is necessary. -Sean -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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