I'm looking for a light fixture to plant a 125 Gallon tank, 72x18x24. I want to grow Vallisneria, Anubias, Echinodoris, Java Fern. Aquatic Life 72" T5HO fixture has 6 or 8 lights. That's for Saltwater, right? I don't need 6 lights for this do I? Is there a T8 fixture that would work? CF? LED maybe?