Generally, the water and the fish in the tank will provide the nutrients and fertilizers needed for plant growth. It is rare that any supplements will need to be added. One important factor in having healthy plant life is your filtration system. Stay away from under gravel filters because they produce a steady flow of bubbles that disturb the surface. The filter plate on under gravel filters also limit’s the composition of the gravel in which the plants are rooted. All other kinds of filtration systems will work well. The only things to be concerned about are if your filter causes too much disruption to the water surface. When this happens, carbon dioxide is lost and plants will suffer. Also make sure the filter creates a current that keeps nutrients moving throughout the tank.
