- Joined
- Jan 21, 2014
- Messages
- 1,994
- Reaction score
- 621
my tank been running for 9 months, and it just got to me that my waterbox have a check valve comes from waterbox directly, and it’s on the return line. And I’m reading all the horror stories about the check valve and how bad they are. And I can’t stop thinking about it at work. How bad is is the situation?