Your reply rang a bell, and I made a quick trip to the Krib and perused the section on Humic Acids, wherein someone writes that H.A.'s are removed by activated carbon. While I'd enjoy having nice clear water, perhaps my fish would be happier in the mud, so I guess I'll leave it for now. Maybe I'm being too cautious? I'm gradually changing out the peat water for tap water that's been treated with Discus Buffer and N.Regulator, anyway, so maybe that'll help. -andrew ps - I've taken some crappy pictures of my A. sp. (aff.?) "Rio Mamore", but my scanner's down for a while so I'll let y'all know when and where I put them up. They're really bad - blurry and/or underexposed - but perhaps with a little photoshop magic I can make them serviceable, at least for ID-ing. -----Original Message----- From: IDMiamiBob@aol.com <IDMiamiBob@aol.com> To: apisto@admin.listbox.com <apisto@admin.listbox.com> Date: Wednesday, July 28, 1999 7:52 PM Subject: Re: Oak Leaves ? <snip> >Oak/beech leaves are becoming more popular as the word gets around. But they >still darken the water. If you want to get rid of the dark coloration, I >suggest you fill a box filter with activated carbon, and slip it into the >tank. It wil clear it up for you nicely. <snip> ------------------------------------------------------------------------- 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"!