Dudes I found a great way to keep air in those tanks for cheap. Everyone knows the Yong heng. It's cheap, generally works well but breaks alot. I bought one and got about a year out of it before it busted. Luckily I had the 3 year protection plan from Amazon and they sent me back a check for almost all my money back. I noticed Amazon now has a 4 year protection plan now. I can absolutely tell you guys that if you use the Yong heng often it will fail in those 4 years but you can just buy a new one and a new protection plan. Even if you have to do that once a year it's like paying 100 bucks for a year's worth of air. Well worth it. Thought I'd share.