Automatic water changer

I am on a well so I don't need to worry about chlorine, chloramine, anything. Don't they sell automatic water change systems?
 
its more diy. do you have drilled tanks? errr msj update your links....
http://www.aquariacentral.com/forums/showthread.php?t=113873 lol

if your on a well a lot of the problems are solved for you. there is two ways build/buy a over flow or if you have a drill then just pump water in and let it flow out.
 
Thanks.

That's more of an automatic topoff, I was thinking more of a constant automatic water changer. Sounds like buying a HOB overflow and a little plumbing is what I need.
 
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