I was reading Byron's article on lights (nice article by the way :-D) and I have a question. I would have posted it on the article but the article is relatively old and I wasn't sure anyone would see it. I currently keep my light on from 3:30 to 10:00 pm (because it looks good with the lights on at night). I have one plant, but it is java fern which requires low light. Also the room it is in recieves tons of indirect sunlight. So saying the sun rises at 7:00 am. than my tank will get a total of 15 hours. This number will get even higher in the summer. Is this too much? Should I change it to another time period?