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cfl lights any good?


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#1 vally

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Posted 14 May 2008 - 03:52 PM

Are CFL lights as good as HPS 600w grolux light in a wardrobe?

#2 _GH0STWITHTH3M0ST_

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Posted 14 May 2008 - 04:03 PM

they're different lights. what does good mean?

#3 Stixman

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Posted 14 May 2008 - 04:41 PM

cfl's are only 20 watt,mostly used for seedlings
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#4 _GH0STWITHTH3M0ST_

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Posted 14 May 2008 - 05:22 PM

cfl's are only 20 watt,mostly used for seedlings

uhh i have two 80w, two 27w and a 50w CFL's? aand i know of people with 200w CFL's...

#5 compostverte

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Posted 14 May 2008 - 05:30 PM

I would say the basic rule is that if you have a decent size space, the very best results are going to be achieved with something like a 600 watt HPS, if you can't accommodate one, you work down through smaller HPS lamps.

Small fluorescents are handy for seedlings,

Some people have worked wonders with fluorescents.:-

http://www.uk420.com...p;#entry1187969

But in general if you can accommodate a 200 watt fluorescent, you could almost certainly fit in a a 250 watt HPS instead - which would be a better investment.

Just my opinion.

(not based on any actual experience of larger fluorescents lol )

Edited by compostverte, 14 May 2008 - 05:40 PM.


#6 compostverte

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Posted 14 May 2008 - 05:56 PM

No they aren't :smoke:

(except that CFLs usually run at a lower wattage than stated)

EDIT :-

Just noticed you actually contradicted yourself afterwards.

EDIT2 :-

Not sure I'd want either stuffed down my pants. lol

Edited by compostverte, 14 May 2008 - 06:03 PM.


#7 Stixman

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Posted 14 May 2008 - 07:01 PM

cfl's are only 20 watt,mostly used for seedlings

uhh i have two 80w, two 27w and a 50w CFL's? aand i know of people with 200w CFL's...


i cant seem to find any higher wattage cfl's round here other that 20w,i ment the smaller cfl's ,not 125w and 250w envirolights :spliff:

e2a:sorry ghost i just realized u were from the u.s,i will have to have a look on the net for some.

Edited by hodcorehoddy, 14 May 2008 - 07:04 PM.

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#8 compostverte

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Posted 14 May 2008 - 07:34 PM

I'm fond of them for seedlings, but I'm fairly convinced a small HID - a 150 watt or even a 70 watt would do a better job.

#9 stu420

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Posted 16 May 2008 - 11:26 PM

i have some 20w cfl's that state they give an output equivalent to 100w, they have a lumen output of 1200. i wonder if 6 of these would give approximately 600w of light at 7200 lumens or is the maths not that simple :puke:

Edited by stu420, 16 May 2008 - 11:57 PM.

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#10 compostverte

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Posted 16 May 2008 - 11:34 PM

Nope

that's 100 incandescent equivalent :puke:

6 of those would get a tray of seedlings through the first 2 weeks.

a 600 watt HPS produces nearly 100,000 lumens, so you would need nearer 50 of them.

The most effective lights for growing pot - as opposed to lettuce - appears to be "point source".

Edited by compostverte, 16 May 2008 - 11:37 PM.


#11 Owderb

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Posted 16 May 2008 - 11:36 PM

i wonder if 6 of these would give approximately 600w


No chance mate..20w is 20w and cfl's cant be compared to hps as they are not in the same league

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#12 KC

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Posted 16 May 2008 - 11:44 PM

20 Cfls are great for rooting cuttings (they don't give off much light)
Big cfls (i use a 250 enviro) are great for seedlings/little plants, people have grown nice buds with these, but don't expect much :puke:

So yes they are good for certain things, keeping you in a plentyful supply of weed then no :nea:
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#13 stu420

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Posted 16 May 2008 - 11:59 PM

thankyou compostverte , Owderb & KC33. :puke:
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#14 _The Sheriff_

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Posted 17 May 2008 - 12:46 AM

Heya stu420 ,

i have some 20w cfl's that state they give an output equivalent to 100w, they have a lumen output of 1200. i wonder if 6 of these would give approximately 600w of light at 7200 lumens or is the maths not that simple

They sound like the ones ive just mounted " soft mood " ?

#15 stu420

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Posted 17 May 2008 - 01:24 PM

Heya stu420 ,

i have some 20w cfl's that state they give an output equivalent to 100w, they have a lumen output of 1200. i wonder if 6 of these would give approximately 600w of light at 7200 lumens or is the maths not that simple

They sound like the ones ive just mounted " soft mood " ?

yep !
2 for 49p i think :wink: proper bargain. lets see what they can do, shall we ?

Edited by stu420, 17 May 2008 - 01:25 PM.

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