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2) Advanced Nitrox & Decompression Procedures - This course trains divers how to plan and conduct a standard staged decompression dive using decompression gas such as oxygen.
3) Helitrox Diver - Introduction of helium in to the diver's breathing mixture to help manage/reduce narcosis.
4) Trimix Diver - For the diver who is looking to explore deeper with the use of helium in their breathing mixture.