led question

[Fallen]

how big of resisters do i need to run these sereies of leds.

blue
http://www.besthongkong.com/product_info.php?products_id=113

and red
http://www.besthongkong.com/product_info.php?products_id=14

[Luke122]

It depends on what power source you are using. An LED calculator will answer this for you.

[SgtM]

Series/Parallel LED array wizard:
http://led.linear1.org/led.wiz