excuse me for asking. Where are the Questions? this sounds more like a statment that you are happy with the unit. If so I would revise the thread title, if not, ask away
Yes, I have run at least 5 gallons through it. As a matter of fact...I just finished my 3rd 5 gallon batch and it's still 0.5 phosphates...actually inching closer to 1.0 in color.
really depends on the grade of filter your using. Some higher grade cardridges will filter out more stuff than others. Personaly I like the products at http://www.spectrapure.com/
Little more money, but In my Opinion, worth it. you really got to dig into the specs on the cardrige your getting, to see what all it is supposed to remove. the smaller the micron rating, the better it filters.you can get almost any brand to fit your unit.