cheap leds will it work to grow?

i doubt you'll be able to do it with purely reds as they only offer lgiht in a small band in the spectrum, you need a mix of different colours if u were to do it with LED's, those reds alone would not suffice throguht the whole process. Check this guy out:
http://forum.grasscity.com/general-indoor-growing/93801-led-lights-pics.html?highlight=LED%27S

i think he got soem good results, read the thread.