• Here is a link to the full explanation: https://rollitup.org/t/welcome-back-did-you-try-turning-it-off-and-on-again.1104810/

mh and hps questions

mrCRC420

Well-Known Member
No. They need to be screwed into a HPS (or MH) ballast. Many HPS ballasts can run MH bulbs. Combined, you could grow 4-8 plants. If you had to only buy one, pick the 400w MH
 
Top