If you get to a Costco, I saw a 5 stage there for $150 this last weekend. But Costcos varies by location on some of the stuff they carry.
I had a GE from Home Depot before (a 3 stage). I'd stay away from that, it's too overpriced.
The one I'm using now is a 6 stage RO/DI from FilterDirect from eBay, it's a Water General system. I'm designed to be RO for my regular drinking water and RO/DI for aquarium use. There's 2 separate outputs for that purpose. I really like it and it was pretty cheap. It's a 100 GPD system and get's me 0-1 ppm TDS at the output.
It terms of ATO, do you run a sump? For my 34G RSM I use a Tunze osmolator because it works well... but for my 72G bowfront, I just use a plain-old-plain-old float switch. All of $20 bucks and a little plexi-fabrication.
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Last edited by slakker; 10-23-2008 at 10:44 PM.
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