[Tbird]

that's interesting deepthought, thanks. Personally I find I equalise once every 2 or three metrs (I think - it certainly feels that way. )i am experimenting with a few things - like really inflating my mouth with air almost to bursting point at 25m in order to have the best chance of equalising at greater depths. Another thing I am trying is to keep the e-tubes open as much as possible after each equalisation, to see if that preserves greater amounts of air. Does anyone know how often the really deep divers equalise?