turtle bask light

Question
i have a red eared slider in a 10 gal tank.  has been doing great, but i just got him a 20 gal tank with   led lights, (like a starter kit)  i havent opened it yet, as i am afraid the led lights are not the proper ones for RES.  should i exchange it? or just add a basking lamp of some sort?

Answer
A 10 gallon is a bit small. How big is this turtle?

And no, a red light is not what you need. You need a UVB lamp and you need basking basking heat. That means you either need to buy a ZooMed Powersun that takes care of both, OR you need to buy a hood and a linear UVB lamp AND a basking heat lamp. Not compact, not coil. Compacts and coil lamps are cheap and dangerous. Buy either #1 or #2 AND #3 (along with the proper fixtures.   

1. http://www.amazon.com/Zoo-Med-PowerSun-Mercury-Vapor/dp/B0002AQDJK/ref=sr_1_1?ie

2. http://www.amazon.com/Zoo-Med-ReptiSun%C2%AE-Fluorescent-18-Inch/dp/B0009YJ3BE/r

3. http://www.amazon.com/Zoo-Med-Reptile-Basking-Watts/dp/B0002DIX5O/ref=sr_1_3?s=p

I would then advise you to do better research if you want this turtle to be healthy and live a long as it is supposed to, which is 20 or more years.

You need to be doing some reading on a site like:
http://www.redearedslider.net
http://www.redearslider.com
http://www.austinsturtlepage.com