100% RO doesn't mean 100% H20 RO efficiency is high but not infinte So, except if you have ultra-soft tap water (in case I wonder why you would RO), RO will be OK EG: here in belgium, my tap water is between 800 and 1200 µS my RO is between 30 and 90 µS I could even heard people saying that 30µS might be too high ;)) ************************************************************************** This e-mail and any attachments thereto may contain information which is confidential and/or protected by intellectual property rights and are intended for the sole use of the recipient(s) named above.Any use of the information contained herein (including, but not limited to, total or partial reproduction, communication or distribution in any form) by persons other than the designated recipient(s) is prohibited.Any liability for the correct and complete transmission of the information or for any delay or interruption of the transmission or for damages arising from the use of reliance of the information shall be disclaimed.If you have received this e-mail in error, please notify the sender either by telephone or by e-mail and delete the material from any computer. Thank you for your cooperation ************************************************************************** ----------------------------------------------------------------------- -- 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. apisto-digest@listbox.com also available. Web archives at http://lists.thekrib.com/apisto Trading at http://blox.dropship.org/mailman/listinfo/apisto_trader