Rain catcher mess in the storm, but a quick patch worked
From my view, my rain water setup got flooded when we had that heavy rain last Tuesday. I had to seal a crack with some tape, and now it collects water without trouble. Your mileage may vary, but what do you do when your eco projects spring a leak?
Consider where the tape was placed on your setup. If you sealed a crack on the dry upper section, even basic tape can last a good while because it's not constantly soaked. That's a detail folks often miss when they picture the whole thing being wet. A fix in the wrong spot would wash off fast.