Well, you just can't let leaks go, especially when the tank is in a living space like that. If you come over we can do some glue-ups together and see if there is anything about it that needs improving.
Honestly, the only time I have ever had a problem with a glued joint is when I forgot to actually glue it. The pipes fit so well together that they just have a very slow drip. When I went to fix it, I found out they weren't glued at all.