Hi,

You can use dual ballast 400w for your grow if you plan on growing on batch at a time. Note that you will need proper ventilation at around 150cfm - 250 cfm(some blowers between 150cfm - 250 cfm wich fits the a/c flange on the hood are great, there are some good one on eBay for around 50$) for your 400w lamp as it will produce heat in the cabinet and you need air circulation as well inside.

Btw, air coming through the blower exhaust must eject outside the cabinet to prevent re-heating the cabinet.

Hope this helps you a bit


Happy Growing!
mafia819 Reviewed by mafia819 on . What Wattage/lighting to use? Hello people, thanks in advance for your help and advice. :) I have a quick question: I'm planning on doing a 36" x 20" closet/cabinet setup. What lighting should I use? 250W? 400W? 500W? 800W? Can anybody please direct me to something that would give trully great buds? I'm looking at this setup, but I don't know if it's completely over-kill for my cabinet http://www.bghydro.com/BGH/customkititems.asp?kc=HLDSSP08&eq=]. Should I use MH? HPS? Both? Thanks in advance! :D Rating: 5