I have read here some where that the barrels will leak. You need to use a sealer on the threads of your caps. I would use a marine grade sealer. That is made for plastics. Also place so bungs are out of water as much as possible.

61 acre water shed lake. bass, channel cat, black crappie, wiper, walleye, redear sunfish, blue catfish and bluegill. To many bullhead and common carp
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