I have been to different spots on dives that were 120 and 130 feet and never ever had a problem breathing this year I had a friend get his Cert and we went and I went to around 68 feet at a quarry that I have been many time and I freaked out my breathing was fast and I just wanted to know if anyone out ther ever had this broblem before and how to fix it I have some of the best gear and need help ,,,,,,,,hi I am new on this and wanted to say hi to all