Is that the one for 139?
I found a bunch of articles regarding the one I'm looking at on ebay. They say not to buy it, but it's cheap and it's no good. Then again, there are just as many people saying to get it and they have had it for years. Also, the original one I looked at from thatpetplace.com is that a RO/DI unit? It doesn't say it in the name, but says it deionizes in the description. I'm assuming it's the same?