lighting upgrade

Hi all, Needed a light boost for my fluval chi and thought I could do a custom one for cheap. All you need is: 1. DC Adapter Constant current power supplies are recommended, but I wanted to try it out with a constant voltage supply because I had the resistors and power supply lying around from...

Hi, Quick question. When looking a replacing non-integrated compact flourescent bulbs, can you increase the recommended watts at all, or would I need to change the ballast built into the tank hood? Hoping someone can help me here. I'm in the process of learning about lighting for my first...