So I have a 10g and I'm going to get a 20 long. I plan on using low/medium light plants and don't plan on using co2. What would be the best lights. Currently I'm using a Finnex fugeray 20" fixture on the 10g and that's proving to be too much light. I was wondering what you're suggestions are. I was looking at maybe the t8 bulbs did at petland kahala, but don't know where to get replacement bulbs. Ahh hero is appreciated.