How bad is it to veg with HPS
- Thread starter green fan
- Start date
The Warlord
Well-Known Member
I used to vegg under hps. It's not bad at all. Not as good as mh i'm sure but not bad.
green fan
Active Member
I have a grow tent that is 2'x2'x5'3"
What size MH should I get?
Will a MH bulb go into my HPS fixture?
sguardians2
Well-Known Member
I found out through research that if you have an hps only ballast that you can use an mh lamp in it as long as it is rated less than or equal to the wattage of your hps ballast. IOW, hps ballast can use mh of same or less wattage. mh ballast can not use hps lamps.
Also, mh runs a quite bit hotter than hps, so be sure of your ventilation.
shnkrmn
Well-Known Member
i veg under HPS all the time.
Me too. I got a MH bulb. All I got was bigger fan leaves and longer branches between nodes. How is that good?
most my indoor is started from clones so my veg time averages 2 -3 weeks. i use these bulbs, ...http://www.eyehortilux.com/superhps.html
sguardians2
Well-Known Member
Good point, I use a 600 watt hps, so I have a few more options. Just go with the hps 150 then, all they way through flowering.
Keep it close enough to the plant but not too close, I hear 8" to 12" away is good for the 150 watt. I have to keep my 600 watt 2 feet away from my gals.
damnbigbudz
Well-Known Member
hey man as far as i know hps would be OK. But MH put off a little more of the blue spectrum that helps plants veg. Also the change over from MH to HPS when you start to flower coincides with the plants natural cycle. So again switching from the blue spectrum to LOTS OF RED and cutting the lights to 12/12 is a drastic change that lets your girls know its time for the buds 
I currently veg with a HPS and I do just fine BUT i could do a little better with a MH. THATS AS FAR AS I KNOW and thats what I learned off this badass site. hopefully someone else chimes in just to confirm it for both of us.
I currently veg with a HPS and I do just fine BUT i could do a little better with a MH. THATS AS FAR AS I KNOW and thats what I learned off this badass site. hopefully someone else chimes in just to confirm it for both of us.
green fan
Active Member
hey man as far as i know hps would be OK. But MH put off a little more of the blue spectrum that helps plants veg. Also the change over from MH to HPS when you start to flower coincides with the plants natural cycle. So again switching from the blue spectrum to LOTS OF RED and cutting the lights to 12/12 is a drastic change that lets your girls know its time for the buds
Hell yeah!
What do you think about supplementing with some t-5 warm bulbs
The Warlord
Well-Known Member
supplemental lighting never hurts.
damnbigbudz
Well-Known Member
t-5s are FANTASTIC for clones. laying an hps or mh against clones is a bad idea because it stresses them out. however as to supplementing them for HID, which stage are you referring to (veg or flower)? During veg I think it would actually be a good idea, it might save you some money and as long as you kept it pretty close to the girls i think it would be enough. BUT i have noticed that vegging under an hps or mh makes my stem-inter-node spaces closer together. It is my personal preference. I would still use hps for flowering for obvious reasons hit me with some more questions man, im still learning too and answering questions helps me out a lot.
hit me with some more questions man, im still learning too and answering questions helps me out a lot.
