I am changing out my 30 gallon tank for a 45 due to a defect (bowing). The 45 is 8 inches taller, but has the same bottom footprint. I currently have a single bulb perfecto light fixture w/ a 40W bulb in it. I have been told this is 1.3 WPG. What will I wind up with on the new tank? I have looked at bulbs that are compatible for this fixture (T8,10 & 12) and the highest they go is 30W? I cannot afford to upgarde my lighting at this time but do not want to sacrifice my plants. Any suggestions?
Current tank pic attached..........

Current tank pic attached..........
