@benedikt76 I couldn’t agree more with you. If all (or better most of all) agreed on 3 minutes at 5 mtrs, why isn’t it possible to adjust this in my Eon!? This has got nothing to do with Haldane’s tables. When I first started diving (1976) the ascent and descent speed was 18 mtrs/min. Nowadays it’s 9/10 mtrs. So if thais van change overtime in a divingcomputer, why can I not change my safety stop parameters into 3 minutes at 5 mtrs? It makes perfectly good sence.