Rgb light strips

[GoFish]

If you have an eBay account they can be purchased for cheaper and shipped for $2 from china, just select with 24 key ir remote and power supply. To answer your question about brightest, not sure. The 5050 means 5.0mm x 5.0mm there is a 6.0mm x something as well. They can be cut and soldered every 3 LEDs. And waterproof, which I'd make sure to get using over a tank
$25 all in or less if you search or bid on an auction listing. They worked for me on a 20 gallon tank as accent lighting but not bright enough to be used alone IMO

Example
http://www.ebay.com/itm/5050-5m-RGB-...item2ec9e22488