I've decided to start experimenting with plants so I now have a brand new tank. This one is an eclipse 6 which sits on my desk. I have a small layer of flourite on the bottom and the water is currently being mechanically filtered of all of the cloudyness. I was wondering, do you usually have a top layer of gravel over the flourite? I think maybe it would help to prevent any dust being kicked up. What plants should I grow first? Also, at what point do I worry about CO2 injection and what method is best to use? Are liquid fertilizers necessary?