70w HPS

have been given some 70w E27 HPS ballasts

wanna use them for small grow
where is best place to buy bulbs in UK for these ballast

i dont know bout UK but i have ordered 1. coming in 2 morrow !

what are your grow box dimensions?

15 x 15 30 high

Google's your best friend. eBay maybe?

maybe check out a local electrical place. I picked up a 70w MH lamp and ballast and a 70w HPS Lamp and ballast for around $150 (I got a discount from it) from my local electrical place. I've used the 70w MH to cover 2 to 4 square feet with no problems.