many of us here (including me) use units from Aquasafe Canada
eBay Store – The Aqua-Safe Pure Water Shop
here is the unit i have, i haev had this for about 2 years now and it works great
eBay: AQUA-SAFE 100GPD MAXIMUS REVERSE OSMOSIS WATER FILTER (item 150081130215 end time Jan-21-07 09:15:00 PST)
since then, they have release better units that come with everything you need, like this
eBay: AQUA-SAFE MAXIMUS MAX REVERSE OSMOSIS WATER FILTER (item 150081322600 end time Jan-21-07 19:00:00 PST)
i have purchased replacement filters directly from them and there cheap, you do have to get them in bulk but when you do you get years worth..
you can see some pics of my setup here...
http://www.talkingreef.com/forums/ga...0&c=2&userid=3
