Quote Originally Posted by chisme
http://www.1-hydroponics.co.uk/grow-lights.htm

screw in hps compacts
Those are just regular bulbs. Not compacts. The tag 'Compacts' suggest the ballast built right into the unit, like a normal fluorescent compact bulb. All of these still require a stand alone ballast.

Some nice stuff on that web site though!
Marc Benson Reviewed by Marc Benson on . Compact HPS!!! I thought you people may find these interesting. Only come in 50 and 75 watt versions but would make some awesome supplemental lighting for the lower canopy. Might even work for your tomato plants HD. 2700-7000K. Screws into a regular light socket. Rating: 5