Fixing a Propane Tank Leak Before It Gets Dangerous. Nothing ruins a day on the ice faster than smelling propane in the shack. In this video I show how I found and fixed a propane tank leak while ice fishing. A small leak can be dangerous, especially inside a shelter or fish house, so it’s important to catch it early and deal with it safely. I walk through the steps I used to locate the leak, check the connections, and fix the problem so we could keep fishing safely. If you use propane heaters w