I thought it would be fun to film propane balloons exploding in slow motion, and I tried popping them a bunch of different ways. I took some user suggestions like flying a drone with a sparkler attached into a balloon, and filling a balloon with a explosive mixture of propane and oxygen and detonating it underwater. I also thew spears at the balloons and hit them with steel wool. I did not directly handle any of the balloons filled with gas, instead I safely filled them from the propane tank with a 10' hose. the hose had a valve that kept the propane in the balloon after I disconnected it from the tank. The first time I filled a balloon I had no idea how big the fireball would be. I lit the underside of a balloon with a grill lighter. The radius of the fireball was 3 feet, and it consumed my arm up to my elbow. I got 2nd degree burns on the top all my fingers, and my arm that took two weeks to heal. My point is these balloons contain a deceptively large amount of propane, be careful. Facts about this video: 828 liters of propane 95 degree heat 72 balloons 18 people suggesting underwater balloon explosions 10.3 pounds of CO2 released into the atmosphere 4 drone propellers 3 days of filming 1 2nd degree burn