I have heard both sides of this but have no exp.

Some people say a Hps will pull more yield and have denser buds.

Some say the Mh will pull almost the same/some say they tested with same strain an all and seen no difference.

Some say that a Mh will produce more crystals. I believe that the only true way is to try it and see what works for you.

Use the Mh your first go round than get a hps and use that the second time with the same strain.

But the hps lets out the reddish orange spectrum and that is what the plants are after in the flowing stage.

But you still can get a decent yield from a Mh also.
You decide if it is worth it, if its your first grow I say use the mh for now and upgrade next time round with all the info you gain.:thumbsup:


I am gonna use a Mh for flower as that is what I got right now, and I can't afford a $100 conversion bulb. But you will get bout 8k-12k more lumen from the hps conversion bulb.

I am planning on getting a 70whps security light from HD an throw it in with my 400 Mh to add light to the side my cab thats not getting the most. And to add a few more lumen wont hurt as i am at 4000/sq. foot wish i was at 5.5/sq. ft.

Hopefully you will get someone with more grow exp. than me to chime in on this. Maybe Dutch Pimp will come threw and pimp your thread with advise. Good luck tho:thumbsup::jointsmile:


~One~:rastasmoke:
~BudG~:rastasmoke::rastasmoke:
KillerBudG Reviewed by KillerBudG on . Metal Halide Hey all, im a noob, tho I have trolled for years and have half-assed tried to grow a few times with little avail. I seem to have a nice bagseed plant that is likely to show sex soon, my main question is: I am using a 400 watt metal halide (which kills the rinky-dink cfl's I had)... What will be the difference, when flowering, when compared to an HPS of the same wattage? I dont have a switchable ballast, so its not an option... tho I have seen some conversion bulbs, are they worthwhile? Rating: 5