My read is that pH is not what you should look at. hardness is. That being said, I have few problems moving fish as I don't usually work with extremes. My rainwater tanks will go back to tap levels with 2 or 3 modest water changes. Going the other way, I'll acclimate the pairs by floating them in a container and slowly adding softer water til I feel I have a balance.Then, I unceromoniously dump 'em, with never a problem. Anyway, a lot of fish we expect will never spawn in tapwater of moderate hardness don't read (at least German). I've seen spawns of mendezi and cf pulchra at a friend's - he keeps them in moderately soft tap at 22C. Here, I have regular spawns of a pertensis type I'm keeping in crowded community tanks at 140ppm, pH 7.4. With so many new fish coming in, it pays to experiment and take nothing for granted. -Gary Elson FBethea wrote: > > I am curiuos to learn how people on the list go about acclimating their fish > to normal water conditions. > > My tap water is 8.5 and the rain water is 6.0. Will I have to mix the rain > water with tap until I get 7.0 thereabouts? > > Francine > ------------------------------------------------------------------------- This is the apistogramma mailing list, apisto@listbox.com. For instructions on how to subscribe or unsubscribe or get help, email apisto-request@listbox.com. Search http://altavista.digital.com for "Apistogramma Mailing List Archives"!