I'm getting tired of water bottle leaks, and the spring loaded bottles aren't cheap. So I want to find out more about a water system with those neat little nozzle:

1. I read that you guys always take precaution to make sure they don't clog up. But do they have leakage problem?
2. I have a rack with 15 tubs, how much would it cost me for a system?

Thanks for any input.