To all the aquarium owners, I currently have a 30 inch aquarium, and I am about to start a new aquarium. The three light bulbs that I am currently using are brands called Triton that is about 15 watts each. Plants in my current aquarium aren't growing well. Since I am starting a new aquarium that is 40 inches, can someone please give me some advice about what lightings are best suited for plants in general? Thanks for the help! Ronald Tsang :)