400w hps or 400w fcl
- Thread starter weedpot
- Start date
the 400 w hps has a higher lumen output than 400 w of cfl so for the same power u get more lumens so id say hps all the way actually for vegging u should be using a metal halide bulb mh not hps.
the hps is for flowering but u can still use the hps for veg its better than nothing
spliffbazz
Well-Known Member
ye if its a magnetic ballest it will make a little buzz continuesly mine did anyway.............ye use the hps for veg and flower and if you can use cfls placed around the middle to bottem of the plant .....more light more yeild.peace
spliffbazz
spliffbazz
it all depends really do u have a reflector or is it an oppen bulb a good way to tell for ur conditions is get a thermometer and try and keep it as close to the tops of the plants as possible then drop or raise ur light until u get a nice 75 degrees f then just raise ur light as ur plant grows now thats if u have a reflector if not ur plant will benefit more if u keep ur light down low and grow ur plants around the light instead of underneath.
i use a day/ night thermometer with a indoor and outdoor therm on it i use the small outdoor part for hanging on the tops of my plant closest to the light hope this helps u out
i use a day/ night thermometer with a indoor and outdoor therm on it i use the small outdoor part for hanging on the tops of my plant closest to the light hope this helps u out
weedpot
Active Member
ya it helps a lot thanks man!
DoeEyed
Well-Known Member
It varies a bit from light to light. Put your hand right above the plants - if it burns your hand within 30 seconds, move it up some. You want the light to feel warm on your hand but not uncomfortable.
the ballast buzz is normal it means its working lol
like i said u can use a hps for vegging but the plant needs more blue spectrum light for vegging wich is found in the mh and when flowering it uses more red/orange spectrum light u need less intense light for vegging than flowering its all about the lumens a 400w hps has a sligtly higher lumen output than a mh myself i use both lights as follows for vegging i use my 400w mh with a 150w hps for flowering i simply swap my mh to a hps and keep the mh off to the side a lil anyways heres a way to get a good vid that will take a lot of guess work out of it for ya jorge cervantes ultimate grow.
its linked on here somewhere but the links never worked for me so i went and downloaded for free at www.thepiratebay.org good luck
DoeEyed
Well-Known Member
This is only half true. You need less intense light for seedlings. It is all about the lumens - and more are what you want. Vegging with a bigger light, means bigger plants for you, less veg time, and better yield in the end.
i take it u never watched jorge cervantes ultimate grow now that guy knows his shitThis is only half true. You need less intense light for seedlings. It is all about the lumens - and more are what you want. Vegging with a bigger light, means bigger plants for you, less veg time, and better yield in the end.
i suggest to just download the vid and take his advise after seeing the monster plants he shows u u know he aint lying everybody has theyre own thoughts and ways to do things so if ur not sure about something get a reputable vid or guide and follow that it will make ur life a lot less complicated than posting on here lol
DoeEyed
Well-Known Member
Sorry to say, jorge is not the end all and be all of growing. My life isn't complicated now, thanks.
well hes got more rep in my eyes than u do and i didint mean to offend u and didint mean ur life was complicated i was giving advice to the guy who originally asked the question.jorge cervantes ultimate grow is the best grow vid i have ever watched and it would be easyer for him to understand what where talking about if he just watches the video and then takes it from there.Sorry to say, jorge is not the end all and be all of growing. My life isn't complicated now, thanks.
im not saying ur wrong ur actually right if ur only looking at lumens the light spectrum also plays a huge part wich is why i use bth mh and hps for my full grow just i use more mh light for veg and more hps for flower.
it would also seem that ur grow journal contradicts ur advice u use cfl's to veg wich have the lowest amount of lumens per watt plus ur the rack the lights are mounted on have no reflective surface and is that tinfoil lining ur walls i sure hope its something besides tinfoil.
ever notice how in the fall the sun seems more orange its also called the harvest sun anyways i wont drag this on any further since trying to teach an old dog new tricks is pointless good luck with ur lights bud and happy cropping
DoeEyed
Well-Known Member
Once again - jorge isn't the end all of growing - and I think you'll find a lot of the more experienced growers here will agree. I wasn't arguing over light spectrum - I didn't even mention it, as what you said was correct. I'm talking about light intensity - and that is a different story. You told the guy he needs less intense lights for vegging. That isn't true. The color spectrum has nothing to do with the intensity. If I use 400w of CFL's, in the 5000-6500K spectrum, vs 400w of MH - the MH light will be a LOT more intense than the CFL's - and provide a bigger, bushier plant from that intensity (aka penetration).
Good luck with your growing.
weedpot
Active Member
jesus lads no need to fight thanks very much for both your inputs both very vaild 
i have a good idea now, weed man i tryed to wach that video but i need to down load something first, oh and that is tinfoil the room is ach a triangle shape so its only 5 foot high at its peak so i was thinking if the hps os at the top it will have a natural reflector because its a v shape probly no good for the cfl because it will be to far away whats wrong with tinfoil?
i have a good idea now, weed man i tryed to wach that video but i need to down load something first, oh and that is tinfoil the room is ach a triangle shape so its only 5 foot high at its peak so i was thinking if the hps os at the top it will have a natural reflector because its a v shape probly no good for the cfl because it will be to far away whats wrong with tinfoil?i couldint watch the vid niether at first its in the newb section under grow vids.jesus lads no need to fight thanks very much for both your inputs both very vaild
so i went on www.thepiratebay.org and downloaded it there u may have to download vlc player to watch it but i can watch on windows media theres three vids u can download get them all they are great for getting the basics.
as far as tinfoil goes its the worst thing u could use for a reflector it wrinkles up and creates hotspots and can burn the plants painting the walls flat white is easyer and more efficient.
if u dont have a reflective hood for ur light u will need to have ur light down low and keep ur plants around it if not they will grow stretched out and u will get less bud in the end.
keep ur light as close as possible to the plants .
most of ur light shoots out the sides of ur bulb not the bottom even if u can mount it horizontally would be best good luck