I actually switched to bottles due to floods caused by a watering system.. I had my racks set up with a watering system for over a year. I got tired of constantly having a flooded tub when a valve would get stuck open from build up. Then I'd take them all apart to soak and clean the parts and gaskets, but no matter how tight or loose I screwed them back together, one or two would drip. Oh it was so frustrating.

I strongly suggest ordering an extra set of valves to have on hand for when you end up with one that you just can't seem to get working right again. Especially if you have hard water. I initially loved my watering system but I just invested in the high end glass water bottles and fill them every day. It's more work but I haven't had a flooded tub or a drippy bottle in a year now.