City water can certainly change. I don't know how Seattle does it, but most municipalities buy water from cooperatives who get it from suppliers, etc. How do you condition your water before water changes? Sometimes, cities will increase the amount of chloramine in response to changes in weather (warmer weather->more bacteria->raise the chloramine level), etc. This is why some people use RO/DI to get rid of 'everything' and make up their own water, especially in sensitive systems like reefs. > From: pentium0@gmail.com > Date: Wed, 20 May 2009 19:33:39 -0700 > To: gsas-member@thekrib.com > Subject: [GSAS-Member] Spring Water Weirdness??? > > Hi All, > > Anyone else noticing unexplained weirdness with their water lately? > Like, wondering if it could be from changes in the water from the > city? > > My 90gallon with: > 3 adult discus > 12 Kuhli loach > 5 cory > 2 checkerboard (small) cichlids > > is having a mysterious bloom of free-floating algae, which water > changes haven't been able to clear up yet. The discus have had some > light ich lately, and a checkerboard cichlid died all of a sudden. > > thanks for any thoughts > > - Adam > _______________________________________________ > GSAS-Member mailing list > GSAS-Member@thekrib.com > http://lists.thekrib.com/mailman/listinfo/gsas-member _________________________________________________________________ Insert movie times and more without leaving Hotmail®. http://windowslive.com/Tutorial/Hotmail/QuickAdd?ocid=TXT_TAGLM_WL_HM_Tutorial_QuickAdd1_052009 _______________________________________________ GSAS-Member mailing list GSAS-Member@thekrib.com http://lists.thekrib.com/mailman/listinfo/gsas-member