Hello, First time poster, long time reader I have read through tons of posts about lights and everything but i kind of want to get more direct thoughts from others. swim has a 3ft by 3ft wide box, by 5 ft tall wood box to grow in, he has lined in inside with mylar, and is trying to figure out what lights would be best to add. He has thought HPS but doesnt like the prices around him. CFL may be most cost effective for him. What are your thoughts? Swim has said he wanted to spend less than 100 on lights. Thanks in advance!