Have you seen JG fittings for ozone? I think they are mostly for water but they do have some (black) fittings for pnuematic use but there is no mention if they are ozone safe. How about ozone safe norprene (not neoprene)
http://www.marinedepot.com/md_viewIt...product=FT1311 tubing and barb fittings?
Western Pump had some regular JG fittings here in Calgary and I ordered some from Eco-pure
http://www.canada-shops.com/stores/ecopurewater/but I can't find them on their site anymore.
HTH