So i got this kit for xmas and i already have mixed feelings about it. I like the tank and background but the light is insufficient to grow plants. The filter is alittle awkward and thery kinda skimped on the substrate. Since i already have it i would like to make it work. Ive decided to go with excel rather than jump ahead with a new pressurized system and it is cheaper then replacing the co2 canisters that fluval system requires. My fisrt question is should i buy a replacement light and run two of the 13W fixtures or is there another option to increase the light on this system. any advice, opinions, or previous experiences with this setup would be appreciated.