Greg, Brita type filters are marginally beneficial. They do remove chlorine and large particles, but leave all sorts of other chemicals and smaller particles. There is one water treatment system, permitted by the EPA to call itself a water purifier, that will give you the clean water you want, on demand. You may check out the details (what it cleans, what is costs, and the cost benefits) at <http://www.espring.com>. Stephen On 3/3/04 5:54 AM, "Gregory Fraser" <Gregory.Fraser@xxxxxxxxxxx> wrote: > One question though. Are Brita style tap mounted filters of any benefit in a > darkroom? > > Greg > > -- Stephen Ylvisaker greyfell@xxxxxxxxxxx Referral #: 252311 "Never do business with pets you don't trust." Robert Kiyosaki, author of RICH DAD, POOR DAD