Hello, there are a few things that may have happened. Often octos pick up sand and grit when they get dragged on the bottom. Try a good vigorous shake in fresh water. After that your moving into badly seated diaphram, split diaphram or slight hole, badly adjusted spring etc etc etc. Would recommend that perhaps you get it serviced. Especially important if you have been using Nitrox. Hope that helps
343 views
Usually answered in minutes!
×