ZERO Water

[jimbo222]

hmm would be great but at 50 cents cost per gallon. due to cartridge replacements..
..i think 15$ per replacement and good for 25g or so

[rocco134]

The cost per gallon is on the high side and having a large tank I can see no real benefit (assuming the product does what it claims). Having said that, if it does work, it might a good alternative for someone that has a "nano" or "pico" tank.