At 03:13 AM 10/16/00 +0000, Bailin Shaw wrote: >What's funny is that my RO water is also fairly high in TDS but not in ppm. This is not right. The whole point of RO water is that it should be pretty free of dissolved solids. Something is wrong. Possibilities: bad membrane; waste set too low (to reduce waste water) so that output is not very clean; leak somewhere. You need to check this out more. Communicate with the person who sold you the RO unit. -- Dave Gomberg, San Francisco mailto:gomberg@wcf.com NEW Planted Aquaria Magazine: http://www.wcf.com/pam ----------------------------------------------------------------- ------------------------------------------------------------------------- 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"!