Hey, this reminds me. I have read about a number of folks here who do just use DI instead of RO. One of the reasons noted was the waste water with RO. When I see combination units that do RO and DI they all seem to do the RO first (waste about 3/4 of the water) and then DI. Most of my DI knowledge does come from this list but what I have read tells me the reverse would be more efficient - what gives? Any ideas? Mike Chappell wrote: > HI there guys, > > I am a small shop online and offer the units 2-9 stage at great prices i > beleive in comparision to the kent and specrapure units and give as good if > not better results, give me an email at : chippell@sgi.net for info on > prices/vareity that i have and things- Just thoght if you are looking to > give me a shot! > > Mike > Threeguysaquatics ------------------------------------------------------------------------- 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"!