MT79
Aquarium Advice Addict
I use a Kent marine RO/DI unit, you can find them at many online stores. Many members have bought their RO/DI units from e-bay. I'm not familiar w/ them so I can't recommend one particular seller/brand.
I saw this link in another post by Melosu58-
http://cgi.ebay.com/New-6st-100GPD-...4QQihZ002QQcategoryZ20684QQrdZ1QQcmdZViewItem
I saw this link in another post by Melosu58-
http://cgi.ebay.com/New-6st-100GPD-...4QQihZ002QQcategoryZ20684QQrdZ1QQcmdZViewItem