http://attra.ncat.org/attra-pub/aquaponic.html http://www.hpj.com/archives/2010/may10/may10/0322ARFamilyHydroponicsFarm.cfm
http://www.backyardaquaponics.com/Travis/Barrel-ponics-Manual.PDF http://www.backyardaquaponics.com/Travis/Aquaponics_Common_Sense_Guide.pdf
