| If I remember correctly 25 l/ per min is on the surface so at 20 metres you would be using something like 75 litres per min.
But don't get hung up on air consumption, there has been lots of posts about it. As long as you plan your dive, monitor your air and are back on the boat with some then you have enough. So it really doesn't matter about litres per minute.
__________________ Resistance was futile - assimilation compete  My Blog DIRx GUE |