Make an Evaporative Terra Cotta Beer Chiller

Step 5 Add sealant around fill tube.

I found that the fill tube didn't seal against the cement so when I added water, it just leaked out around the edges of the tube and barely wicked into the sand. I had to add sealant to make it work. Not much more to say ... just make sure you get into the gaps around the fill tube and go all the way around.