Cfl or hps?!?

need some help people, my last two plants died because my grow area was getting well too hot :/, was 40 degrees every night, because i have nothing to exhaust the air, so i wasnt sure weather to buy a bigger fan and direct it onto the light, or get a 300 cfl bulb or a 250 hps? what temps do them lights get up to?

oh and btw the light i was using is a 400 watt dual spectrum. thanks

build an exhaust....its one of the best things u can do.....trust me.....hook it to the dryer vent if u need to...but after light/nutes id say exhaust is most importantu need to get that hot/stale air out

Jlee1990 said:

need some help people, my last two plants died because my grow area was getting well too hot :/, was 40 degrees every night, because i have nothing to exhaust the air, so i wasnt sure weather to buy a bigger fan and direct it onto the light, or get a 300 cfl bulb or a 250 hps? what temps do them lights get up to?

oh and btw the light i was using is a 400 watt dual spectrum. thanks

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hps and a stronger fan exhasting would be better overall but you may able to get away with a 300 watt cfl and a fan blowing on the tops of your plants

is that the best thing u think i can do? would i still get the same problem if i changed lights?

why not use a cool tube with a vortex inline exhaust fan. 400W mh kicks cfl's ass for flowering.

i cant afford a cool tube mate, the hydroponics shop near wher i live charged me 100 quid just for the bulb and reflector :/

Jlee1990 said:

is that the best thing u think i can do? would i still get the same problem if i changed lights?

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u might be able to get away with it(as long as u can get that heat down)....probably end up with scrawnier plants for it too....assuming u had everything else setup

so do you think as long as i can a little 4 inch exhaust fan with sum pipe exhausting the hot air out my temps should go down and the plants will grow nice? sorry for sounding like a dumbass mate but im new to this

temps will go WAY down.....ull realize once u put it in what a difference it makes in ur room

hope so mate :/ because every time i leave my light on for 18 hrs, the temp gets up to 40 degrees, and the top of both my plants leave curled upwards ethier side and dried up with little red dots on them if that makes sense?

yea get a good exhaust system, best thing u can do.....i use a 250w hps ina a 27inch by 3ft deep and 65 inch high grow box and a 4in inline fan and carbon filter and my temps stay right around 75-79

you dont want a MH for flowering by the way.... hps for flowering MH for vegging.....

my grow space is about 2 ft x 2ft x 6ft. carbon filter? do you think itl b alrite with just a 4inch exhaust fan with a pipe attached to it leading out of the grow space?

MH? i was gna use my 400 hps to grow my seedlings and all the way through the cycles?

the filter is for smell....

Jlee1990 said:

MH? i was gna use my 400 hps to grow my seedlings and all the way through the cycles?

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thats what i do my friend...doesnt hurt a thing.....and your other question no u dont necesarily need a carbon filter, u can be just fine without one

Jakabok Botch said:

the filter is for smell....

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i was just gonna elaborate on that lol....im into 3rd week of veg and they are stinkin already so i had to hook up the filter early...

niceone mate, uve just put my mind at rest lol , i get very paranoid about if im doing it all right seen as tho my last two plants died on me :/ ha, when my seedlings hatch will they be oki under the 400 watt light? becos i dnt wana toast them

should be ok....just dont put them too close...

without exhausting the air,

the heat will just build up and keep on building.

fans will just move the hot air around (making it somewhat better, but not fixing the problem)

even a small cfl will do this, just more slowly.

so, if you cant exhaust, you are gonna have to settle for smaller lights. (and even they will be a bit of a bother and the plants not as healthy, they need fresh air)

you dont always need a carbon filter, can use negative pressure and some strains smell very little,

but if you exhaust where people can smell it or might, and if there is some smell, might want to get a carbon filter.

and if you dont know your strain and need to vent where people might smell, its probably best to get a carbon filter.

they can be cheap, for a small system.

bit of a joke mate, talking about not affording 100 ..

i understand, but its still a joke, you buy weed yeah? (if you dont, my apologies and this doesnt apply )

if you do, then you know, 100 is just a bit of weed.

but lemme tellya..

once you grow and were buying before, 100´s are gonna stick around lot longer.

and weed will stop feeling like money to you

before i was growing, i would never just forget weed somewhere (never sold and never was rich)