Originally Posted by Edward
The magic word is NOT Willow for me.
I have 4 identical 10 gallon aquariums in a sunny room with green water. In one as an experiment I placed a bunch of willow branches. They have developed roots and been there for 4 weeks. The green water has NOT changed. Why?
The magic word is NOT Willow for me. -
Thank you Edward for the experiment!
You probably continued feeding your GW with nitrogen, didn't you?
If you'll give enough food for both GW and willow, they both will be living in your tank.
If you stop adding your ferts the GW will die much faster than willow.
Or maybe it depends HOW MUCH NO3 we are adding. It would be interesting to try two tanks with GW and willow, first - adding NO3 as usual, second - limiting or discontinuing NO3.