what light? low watts plenty lumens

i have a 400 watt hid with good previuos results but now looking to optimise space and lighting situation, Im just thinking could i possibly get more lumens with cfl's i want tp use as less wattage as possible but wantm plenty of lumens how do i go about it all opinions welcome need strong facts and info. victory is mine

i dont know but i know/read that a 600w gives most light/lumin per watt

cfl's can't beat the lumens per watt of a 400. Anything over 150w hps can't be beaten by cfl's sorry.

OregonMeds said:

cfl's can't beat the lumens per watt of a 400. Anything over 150w hps can't be beaten by cfl's sorry.

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yeh but maybe 2,3 250watt cfl's? low temp closer to plants i have pure power plant and ak47 ive had the hid for 2 years and not to sure is efficiant wanna do a sog grow so wanna keep the lights close to da plants

QUOTE/ SOME PEOPLE THINK GREAT GODS COME FROM DA SKY

lawl yes cfl's can beat 400watt hps, but they cant do it useing one bulb alone.......... your best bet is grab another 400watter or upgrade to a 600. a 400watt light added like 5 bucks to my electric bill a month. wasnt no big deal to me.

As far as efficiency goes, I'm pretty sure no matter what you do, you will be using more watts for the same lumens. So you'll be using more electricity, but CFLs are much more space-friendly and in large quantity I would assume will produce just as much light

If you have a 400w light you shoudl stick with that. CFL's are a waste of time. You might be able to get similar results with similar wattage if you are very good at it. BUT, you'll have to manage your lights an do a lot more work. It's just a huge PITA and you already have a good light. Just keep doing what your doing and try some different styles. Maybe you can veg with a few CFL's, then switch to the 400w only for flower. Or you can try a SCROG with CFL's for veg and the 400w for flower, should increase efficiency.

I use a power meter to record how many kwh my grows take and then weigh them out to determine which strains and which styles are truely the most efficient. Most efficient time of year to grow, etc. Dependant upon portable A/C's vs. night time heaters, it's all in the pursuit of the best options.

Power Meter = $30.00

I use a power meter to record how many kwh my grows take and then weigh them out to determine which strains and which styles are truely the most efficient. Most efficient time of year to grow, etc. Dependant upon portable A/C's vs. night time heaters, it's all in the pursuit of the best options.

ok i gotta a draper 3 in 1 moisture p.h and light tester it goes up to what i assume 2000 lumens but my 400 watt bulbs r only hitting 1500-1800 is this correct i have a few bulbs

sylvania britelux
osram vialox
lucalox ALL 400s
sylvania grolux
philips son t agro

i have no proper light tester but some r more orange some glow more white

i'm in the uk by the way were can i get an accurate light messurement device/allso i need parts for space time continuem CAN U HELP?

watch this space im gonna put sum pics on later once i figure out how got PPP and an AK47 clone

allso now my 1.2x1.2 tent is gettin to hot 28-29 degrees and 15 humidity i have a 125mm extactor fan and carbon filter this worked beautifly before but in a smaller room now, im now runnin the fan ducting straight out a vent in the room without da carbon filter as it can only go through da fan into da filter ( not through da fan in da filter and tuvver side) lossin patience with it help me out


political violence in ur city
RAT RACE

28C is fine for growing. You're good up to 30+.

You're 400watt should be rated for at least 40,000 lumens, so 1500 is probably not accurate. I wouldn't trust those meters for anything except moisture level btw, but that's just me...

You won't beat HID with cfl...if you want your light closer to the plants get a cool tube...

i cant work in dat heat plus its like giving invetations to pests wanna get 21-22 (if u dont got targets u wont reach them) im gonna take clones off da ppp today want the temp sorted or we could end up wiv problems!!!! yeh and have a selection of bulbs for da hid not sure wich is best i did list them

The ideal temp for growing marijuana is 25c, +/-1 degree with lights on. Where is the intake coming from? What are the temperatures in the room that the tent is in? What cfm ratings are the fan and filter? What is the volume of your tent? You should be extracting at least the volume of the tent every minute with hid lighting, preferably more.
Also FYI, lighting doesn't get more efficient than hid. Cfls put out 60-70 lumens per watt, whereas a good 600w hps will give 150 lumens/watt. LEDs are supposedly more efficient but because the light is coming from multiple small sources, the intensity isn't as great. The best LED grow I've seen used 600w of LEDs, costing over $2000, and gave results similar to what you would expect from a 600w hps in the hands of a competent grower.

hello hairy
i got the temp sorted 21-24 no intake yet gettin a 5 inch fan next week wich will sit at the bottom of da tent 5inch xtracter fan at the top what are cfm ratings? main problems now are humidity is only at 15 how to raise humidity

Don't use an intake fan, they are a waste of energy. When an exhaust fan moves air out of a room, the pressure drops slightly and an equal volume of air is pushed in from the higher pressure outside, if you have a passive intake (hole) roughly the same size as the exhaust.
Cfm stands for Cubic Feet per Minute, and is a measurement of how much air a fan will move. An alternative is cubic metres per hour, m3/hr. Some fans will have it printed on the label with the wattage, voltage etc, others don't and you'd have to ask the place you bought it or check the specs online.
You need to know the airflow of the fan so you can work out how big a fan is required for your room, it's a bit hit and miss to just guess.
What is the humidity outside of the room? If that is ok, then you could well be overventilating. If the humidity in your area is low anyway, then the simplest way to raise it is to have a bucket/bowl of water in the room with a towel hanging over the side and a fan blowing across it. If there is not space inside the tent then sit it near the intake hole.
Also check your nighttime temps, you should be keeping them above 18c to avoid stress to the plants.

wots happnin people got temps pukka humid sorted my ak47 clone is 6 inches power plant is 50 cm should i flower it i cant wait for dat ak wanna smoke it never had it or should i clone da ak when its grown up was hoping it was the serious seeds ak47 but not sure has n e 1 got blue cheese clone smoked it da other day couldnt fuckin believe it was that choong

havent posted for a while got nivarna ppp feminized germd 3 beans 1 sprouted? (have a good record with sprouting ) the seeds were small not what i was expecting, was in veg for a bout 6,7 weeks toped her at about 55 cm just turned the lights 12/12 2nd day flowering allso just got 2 ak47 clones and took 2 clones from the ppp,

all my clones sit under the 400 by day and under flurescent by night

i just spent a day checking on a grow journal here and inspired me to share mine it was an excellent grow dr kronic i think respect nice bud but u didnt share the harvest

using a 400 watt to flower by the way any coments advice welcome am i doin n e thing wrong?

just an update of whats been going on lots of flowers in the garden aint it pretty 18 days in about 5-6 weeks left
real easy plant to grow and maintain