I just bought a 216 watt T6 fixture. It came with 2 daylight 10000K bulbs and 2 Actnic Bulbs. I'm looking to replace the four and hoping to get moderate to high lighting for my 72 Gallon bow front. Any reccommendations/links to a site where I can purchase such bulbs? I really like the fixture and it also came with 4 pairs of LED's so I'm hoping I can find good bulbs to use.