Freshwater Test Kit Results

Now after nearly two weeks if waiting I received my freshwater aquarium test kit... It tests for pH, nitrate, nitrite and ammonia levels. The results so far are:
Ammonia : 0-0.1 ppm
Nitrite: 0 ppm
Nitrate: 0-3 ppm
pH: 7.6

This is the water that has been sitting in my ant channel that circulates around the house. The water is clear and has plenty of fish in it, it's developed its own ecosystem. I wonder if the nitrate levels are too low for the plants?

Here are some pics of the plants as they look today.