I have a 75 Gallon that has a Fluval Plant LED that seems to be too much light for my tank. I am getting algae along the substrate, except not in shaded parts. I have my light cycle down to 6 hours, and am adding plants, but I also thought maybe I should put some floating plants in to diffuse and shield some light as well as soak Nitrates out. Any suggestions on what I should be looking for?