Fisheries and Aquaculture Extension Specialist D. Allen Pattillo discusses adding iron nutrients to your aquaponics system.
Links:

Iowa State University Extension and Outreach Fisheries http://www.nrem.iastate.edu/fisheries/
Iowa State University Extension and Outreach Store https://store.extension.iastate.edu/
North Central Regional Aquaculture Center (NCRAC) http://www.ncrac.org/
Southern Regional Aquaculture Center https://srac-aquaponics.tamu.edu/
D. Allen Pattillo Twitter https://twitter.com/ISU_Aquaponics
(Publication) An Overview of Aquaponic Systems: Hydroponic Components http://lib.dr.iastate.edu/ncrac_techbulletins/19/
Aquaponics: How to Do It Yourself http://www.ncrac.org/video/aquaponics-how-do-it-yourself
For more information about Iowa State University Extension and Outreach visit: http://www.extension.iastate.edu/
An Overview of Aquaponic Systems: Hydroponic Components. March 2017. North Central Regional Aquaculture Center Technical Bulletin Series Publication No. 123. Available: http://lib.dr.iastate.edu/ncrac_techbulletins/19/
Burden, D. and D.A. Pattillo. July 2013. Aquaponics. Available: http://www.agmrc.org/commodities__products/aquaponics/
“Roots as Nutrients” https://www.youtube.com/watch?v=xAudq28n8l0&index=1&list=PLyDHx-rmZpCljgr4za05H2eHKwmMhJYI1
“Aeration” https://www.youtube.com/watch?v=MWsVmj6jKs0&index=2&list=PLyDHx-rmZpCljgr4za05H2eHKwmMhJYI1
“Biofilter Tank” https://www.youtube.com/watch?v=uGLt5SV5tcQ&index=3&list=PLyDHx-rmZpCljgr4za05H2eHKwmMhJYI1
“Ultraviolet Light Sterilizer” https://www.youtube.com/watch?v=Q4Q7ptx3UjY&index=4&list=PLyDHx-rmZpCljgr4za05H2eHKwmMhJYI1
“Buttercrunch Bibb Lettuce” https://www.youtube.com/watch?v=CM4kFjhvjmM&index=5&list=PLyDHx-rmZpCljgr4za05H2eHKwmMhJYI1
“Italian large Leaf Basil” https://www.youtube.com/watch?v=mHQ8Aht_3JU&index=6&list=PLyDHx-rmZpCljgr4za05H2eHKwmMhJYI1
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