| It depends how you're doing your multi-level dive. If it's a traditional swim to the deepest point and gradually work shallower then there is no problem.
However, in cave diving where you have no choice but to follow the profile of the cave, then if it has lots of uppy downy then it will eat through diluent. I've emptied a 3L dil bottle before, admittedly there were other contributing factors.
I guess in the above example, the reviewer doesn't really understand the concepts involved (a bit worrying if he's just done a course). Another good reason not to read reviews.
__________________ "I hate to advocate drugs, alcohol, violence or insanity to anyone, but they've always worked for me" Hunter S Thompson http://www.snp.org |