This is what I’m looking for in a root mass that can filter and purify fish water. Note the complexity and porousness available from a single plant. The root system extends about 8" downstream, approx the height of the plant. Those roots are a perfect place to entrap nitrobacter and other beneficial microbes to break down the components of fish waste, and allow the roots to take it up. The reddish sienna color is the color of the bacteria culture I need to establish. If I can establish a full set of 40 plants, that will deal with a lot of waste.
1, 2. 1/2" water supply line surrounded with root mass in the 2" tube.
3. epilobium as seen from the outside of tube.
epilobium glaberrimum Growing
Epilobium glaberrimum glaberrimum
examination of root structure
growing a biofilter