I'm sure you'll get more posts on this and you can check the archives too. In a nutshell, I have used Canadian sphagnum with some success, no problems with insecticides or other contaminents. It will help (even a lot) but if your water is even moderately hard you will have a lot of trouble getting the hardness and pH down to where you need to be for the blackwater apistos with just peat. I finally got an RO unit last month and will never go back. The $110 25 GPD SpectraPure from Reef Fanatics was well worth it for me. Note that I live in an apartment and just connect it to a laundry sink in the basement with the standard hose connector. I now put peat in the filters and use the RO water straight and my fish are doing better than ever. I do have a lot of wood and plants in the tanks to add a little buffering. >Hi List, > I am wondering if anyone has used this peat before and is it good >lowering the hardness and pH of water? Premier Sphagnum Peat Moss Tourbe >3.8 cu ft. I visited their site and they didn't talk about much of the >peat moss. I want a peat that will lower the hardness and pH so that I >can start keeping some difficult apistos. Thanks > >Ade Lau >adelau@uwyo.edu >ps) Possible I can get it at Wal-mart most preferred. -Doug Brown debrown@kodak.com ------------------------------------------------------------------------- This is the apistogramma mailing list, apisto@majordomo.pobox.com. For instructions on how to subscribe or unsubscribe or get help, email apisto-request@majordomo.pobox.com. Search http://altavista.digital.com for "Apistogramma Mailing List Archives"!