Hi All, just changing everything over to Eva Barrier and Duotight. I am using fermentation gas to purge the dry hop and serving kegs, then gas out of serving keg to a jar of sanitizer for blowoff. Will the 4mm tubing be big enough for moderate fermenting yeasts? I put some gas in the fermenting keg to check all the fittings for leaks. The bubbles coming out of the blowoff were quite small. About to brew a 1.063 IPA with Apex San Diego yeast. What do you think?