led lighting?

[Ryan Joel Smith]

I'm sorry, the lady im buying from did not know the dimensions as she is selling the tank for her sister. I do know it is 5ft long. My problem is this: whenever i read about led's i feel like i need a "led dictionary" as i have no idea what the terms being used mean. I found a few setups on ebay ie. http://cgi.ebay.com/300w-LED-Aquariu...ht_4063wt_1141 would this be enough??? or should i buy more. Sorry for being so un-educated on the issue.

Thanks for any help