This kit is suitable for medium-sized tent. 600w is more than enough for the 1.2 m x 1.2 cultural spaces, complete and easily.
The bulb in the kit will work with all kinds of ballasts but it is optimized for use with the "superlumen" 10% boost.
The ballast included is an electronic one with four settings, 300/400/600/660W. This means that you could use 300 or 400w during the vegetative phase and then put it on 600w during bloom phase. To maximize your crop you can even boost it to 660w.
The kit includes:
1x Cool Tube fittings 125mm 49cm.
1x Lumatek 600W ballast.
1x Lumatek HPS 600 W
1x Cable for ballast and reflector.