Thanks guys. My grow room is in a place where noise would be a defnate threat to its secrecy. Im getting a 400 of HTGS, just wanted to be sure.99% of all magnetic ballasts will buzz sooner or later, that is the one reason for getting digital ballasts. As far as louder, I would assume the 1000 watt ballasts would be louder due to the fact they are pulling more current. Is there a big difference between the 2 ? I don't think so, the 400 will buzz loud enough to get on my nerves just like the 1000. I use digital ballasts so I don't have to worry about it.
Be sure to order another bulb with your HTGS purchase as their bulbs seem to fail within the first month.Thanks guys. My grow room is in a place where noise would be a defnate threat to its secrecy. Im getting a 400 of HTGS, just wanted to be sure.