The trick is to plant super heavy, and keep the stocking light. I had a 10 gallon tank, that had 6 congo tetras in it only. with a ton of hornwort etc. after 6 months of no water changes, just topping off from evaporation, nitrates were still below 10. Research into natural aquariums. I just order a book on this on amazon. Basically, there are tons of people that keep aquariums that only supply light and food, no filtration, heating etc. http://www.amazon.com/gp/product/0967377315/ref=ox_ya_oh_product Cory > Date: Sat, 16 Jan 2010 14:31:28 -0800 > From: dave@cheapfishstuff.com > To: gsas-member@thekrib.com > Subject: [GSAS-Member] Full ecology cycle aquaria system > > Ever since I saw a documentary on how they're using (or creating) wetlands > to greatly clean up treated sewage, I've been puzzling over whether it's > possible to set up a complete ecology cycle system that requires no water > changes. > > Such a system would look something like, aquarium -> filtering -> heavily > planted tank, maybe like a marsh tank* (may need more than one stage) -> > back to aquarium. > > The planted tank(s) would consume the nitrates and related fish-caused > nutrient concentrations, and return the water to fairly pristine state. > > Has anyone here tackled such a system, or know of resources related to > building one? > > (* sans mosquitoes... I hate mosquitoes...) > > -Dave > > _______________________________________________ > GSAS-Member mailing list > GSAS-Member@thekrib.com > http://lists.thekrib.com/mailman/listinfo/gsas-member _________________________________________________________________ Hotmail: Trusted email with Microsoft’s powerful SPAM protection. http://clk.atdmt.com/GBL/go/196390706/direct/01/ _______________________________________________ GSAS-Member mailing list GSAS-Member@thekrib.com http://lists.thekrib.com/mailman/listinfo/gsas-member