Quote Originally Posted by Mitch21 View Post
The website for the canister says it works for about 18 months... In your experience, is that pretty accurate?
18 months is fairly accurate, give or take a couple of months. These can filters can also be popped open so you can replace the carbon with a jar of activated carbon from Wal Mart for about $10. If you are clever, you can also build your own larger version using a 2.5 gal bucket and 4"-6" PVC using a drill, a poly fiber pre-filter and some mesh or vinyl screen.