i just finally got all the algae out of my fish tank i was starting to loose interest in it after i kept trying to get rid of the algae and it wouldn't leave. but its about that time to change the bulbs in my tank and i have small PC i was thinking of upgrading the light but i didn't know what would be a good light and wouldn't be too much or run to high on electricity im 17 my parents think the tank runs to expensive and i don't want to spike the bill. and is there a difference between t-5 or PC or do u go by just the watts like is a t-5 will less watts better than a PC that has just a little more watts.