Recently bought the current usa serene sun pro le light fixture for my 75 gallon aquarium. There are glass covers on the top of the aquarium. There are medium/ highlight plants. Needing enough light to reach lower leafs of purple cabomba and alteranthia reneki, and to color them up. There are green plants in there too.Also would like to bring out colors of south american puffers and cardinal tetras.Question is what should I set the light intensities on the ramp controller. I can control the white,blue,red and green.