I did some research and bought the DIY 24 led dimmable kit from Aquarium 24 LEDs Dimmable DIY LED kit with optics I love the kit it was fun to build and i retrofited it into my 12g nano. It came with alot of stuff. LEDs are super bright! double what my stock nanocube lighting was. I do suggest this kit to everyone looking for a cheap kit.I read the reviews but needed to know for myself. The only thing i was unhappy about was, I tried to wire them parallel because i do alot of custom led work on cars and i have always found that it works best. Well i guess for these ballasts or "led drivers" parallel didnt work. So i wired them in series, it worked out BUT i had to change the potentiometer variable resistor (dimmer) the middle tab where you are supposed to connect the wire from the driver was loose and would create a strobe light effect. i went to radioshack and bought two 25-ohm rheostat variable resistors. They not only fixed the problem but they are alot smoother then the ones that come in the kit. Has anyone else had a problem similar to this ?