<a href=showthread.php?s=&postid=8946920#post8946920 target=_blank>Originally posted</a> by reefer on a budget
mdt178 your box is full. the SLS ballast is a dual 250watt hqi blue wave. i dunno if its a 7. all i know is that SLS sells two types of the 250 hqi, 1 is a single and the other is a dual. mine is a dual, whatever it's called.