Backyard Aquaponics
A place to discuss aquaponics

I was recently reading about Azolla Ferns and was wondering how they would fair in an AP system for increasing the nitrogen levels. They are supposed to be extremely apt in releasing nitrogen and quite hardy (http://en.wikipedia.org/wiki/Azolla). I was thinking of seeing how they would work in a system divided by half Azolla and half other product. Input, experience, etc. is welcome. I was also considering mimosa pudica for similar expirements. Anybody let me know. Thanks.

I think PJL had azola

Low Nitrogen levels aren't an issue in aquaponics... and if you want more simply feed your fish more, or add more fish if your system will allow it.

If a system is designed/set-up correctly it will be able to run a good ratio of fish per sqm of grow bed and Nitrogen deficiency should never be an issue.

Forgive me, I'm still young in this practice. Excess nitrogen doesn't allow for better plant growth? If I had half my grow bed with (basketed) Azolla and half with a product (say peppers), the excess nitrogen wouldn't encourage plant growth. I'm at a loss at nitrogen's role in this. Please help me.

Excess nitrogen can negatively impact fruiting plant production, cause all vegetation and no fruit - it can also effect the storage quality of produce. In most AP systems it is potassium/iron that limits growth and nitrogen levels are not limiting (unless very small amounts of feed are going into the system)