Enriched Air / Nitrox Pre-requisite: PADI Open Water Diver. The PADI Enriched Air Nitrox course qualifies you to use enriched air blends of 22 – 40% enabling you to enjoy longer no-decompression dives. The course takes 1 day with home-study, includes manuals, slates & certification. Price: £120.00 (Including VAT at 20%) Full Crewpack including DVD Add £15 Quantity: