Advanced Nitrox dive in Lake of Zurich

My buddy Patrick and I went for another advanced Nitrox dive on our "home reef" called "Terlinden" in the lake of Zurich, Switzerland. The dive wend over 70 minutes and as deco mix each of us had a 50% O2 tank. I didn't film a lot some shots are here to share. Still need to get less backscatters and consistent white-balance. Thanks Patrick for the nice dive.