The hole in this is soooo small it takes a few seconds of blowing through it to get air to come out. I wonder if it was like this always, and never noticed. It was a drop then nothing. Then a little later another drop. It's not like a flowing leak, but eventually it will be bigger. It looks like it's where the seems meet it was a little thin. I have bong that seeps where parts meet. It just slowly collects on the outside of the glass. You wipe it away, and then a little later there it is again. Never runs down the little bit of water like plugs the tiny holes. Very odd, but as wise old man to me "I've seen that fish before" lol. I don't have any good silicone all I have has hardened. I was think about giving it a spray with flex seal just not sure if that's safe with it coming into contact with water.