03 May 2010

Here is the Nitrogen Cycle in action. For the past two weeks our trout tank has been host to an aquaculture/hydroponic setup (growing plants without soil). Fish waste is high in nitrogen, which happens to be an essential element for plants like this lettuce. Nitrogen is VERY abundant in the atmosphere but plants need "fixed" nitrogen in their growing medium. These seeds germinated right away and are thriving...they just can't seem to get close enough to the window though!

1 comment:

Kristen said...

I'm interested in learning more about how you set up the seeds above your trout tank. My 7th graders raise trout as well, and I'd love to incorporate the nitrogen cycle this way.

Hope you are enjoying your summer!