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Offlineibusturcherry
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Registered: 04/15/10
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CFL wattage question, help!
    #609605 - 02/16/12 09:26 PM (9 years, 8 months ago)

Have a few soft white (2700k) and cool light (6500k) bulbs that are 26W.
they also note that they are equivalent/replacement  for 100W. so does that mean i can safely say the wattage is 100w??

for example, can i get away with using 1 cool light 26W for 2 seedlings and still assume both plants are getting 50W each? 

confusing..


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Offlinephrostbyte
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Registered: 09/15/11
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Re: CFL wattage question, help! [Re: ibusturcherry]
    #609611 - 02/16/12 11:44 PM (9 years, 8 months ago)

I honestly have never used cfl's but from what I read you want to look at true wattage not equivalent wattage.  So for your case you would probably want to use like 4 or more of them bulbs and maybe attach to a power strip with these

http://www.walmart.com/ip/GE-Polarized-Lamp-Socket-Adapter-Ivory/16644756


to end up looking something like this







Or Just get a bigger CFL Bulb

http://www.amazon.com/105W-equivalent-6500K-daylight-spectrum/dp/B00570FU3U

http://www.ebay.com/itm/105W-CFL-400-W-Equal-6500K-Full-Spectrum-Daylight-/170685754032?pt=LH_DefaultDomain_0&hash=item27bda9eab0




The more light the bigger the buds! :thumbup:


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OfflineRasJeph
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Re: CFL wattage question, help! [Re: ibusturcherry]
    #609616 - 02/17/12 07:19 AM (9 years, 8 months ago)

That just means they can replace a 100w incandescent bulb. If you have 2 26w bulbs, you have 52w. I veg under 6 of those 26w bulbs and have no trouble filling my 3x2x4 area with vegetation.

Also, I use the same adapters in the above post, in the same way.


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InvisibleHarry_Ba11sachM
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Re: CFL wattage question, help! [Re: RasJeph]
    #609620 - 02/17/12 11:06 AM (9 years, 8 months ago)

If you feel like putting some effort in you can get a nice reflector made up as well. Don't forget that more than 60% of the light from a bulb shines away from the plants, so reflectors are very key.

Here are two different reflectors I made for seedlings and clones using CFL's a couple years ago. Let me know if you need clarification on anything I did here;






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Offlinebm90191
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Re: CFL wattage question, help! [Re: phrostbyte]
    #609697 - 02/18/12 12:07 PM (9 years, 8 months ago)





Wattage/size none of that matters.  To put it very simple the only two things you want to look at on a CFL bulb are color (6500k for veg, 2700k for flower) and most importantly lumens.  If your talking about CFLs you can plug into a normal outlet just worry about the lumens, it says somewhere what the actual wattage is like a 100 watt uses 26 watts.  I paid 35$ for 4 100watt cfls the other day and put them into 4 work lamp sockets theyre each rated for like 1300 lumens or so total they are putting around 7000 ...just a little less that my 125$ Hydrofarm T5 2ft 4bulb fixture which outputs 8000 lumens altogether.  The mogul based CFL bulbs are actual wattage so 125 watt mogul CFL will be somewhere around 10,000 lumens but you can't plug those into normal household sockets.  Hope this helps


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Offlinebm90191
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Re: CFL wattage question, help! [Re: bm90191]
    #609698 - 02/18/12 12:11 PM (9 years, 8 months ago)

and 15,000 lumens for a 3x4 veg area is definitely nice but i'm totally against CFL's for flowering i should mention so I would never need to buy a cfl in the 2700k range except I may change out the bulbs in my fixtures when I go into flowering just to attach the walls around the plant give plenty of light under the canopy while fitting a 1000watt hps above should get a huge yield off 4 plants


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InvisibleHarry_Ba11sachM
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Re: CFL wattage question, help! [Re: bm90191]
    #609699 - 02/18/12 12:13 PM (9 years, 8 months ago)

Lumens are a unit of light that exclusively measures light output visible for the human eye. Has absolutely no bearing whatsoever on PAR (photosynthetically active radiation) or chloroplast activation for encouraging photophosphorylation.


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InvisibleHarry_Ba11sachM
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Re: CFL wattage question, help! [Re: bm90191]
    #609700 - 02/18/12 12:14 PM (9 years, 8 months ago)

Quote:

bm90191 said:
and 15,000 lumens for a 3x4 veg area is definitely nice but i'm totally against CFL's for flowering i should mention so I would never need to buy a cfl in the 2700k range except I may change out the bulbs in my fixtures when I go into flowering just to attach the walls around the plant give plenty of light under the canopy while fitting a 1000watt hps above should get a huge yield off 4 plants




And if you just MUST use lumens as a measurement, then 15K for 12 ft^2 is abysmal for healthy, dense veg. If you equate a 600W light being 100,000 lumens, you'll see what I mean.


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Offlinebm90191
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Re: CFL wattage question, help! [Re: Harry_Ba11sach]
    #609701 - 02/18/12 12:20 PM (9 years, 8 months ago)

Quote:

Harry_Ba11sach said:
If you feel like putting some effort in you can get a nice reflector made up as well. Don't forget that more than 60% of the light from a bulb shines away from the plants, so reflectors are very key.

Here are two different reflectors I made for seedlings and clones using CFL's a couple years ago. Let me know if you need clarification on anything I did here;










dude super simple reflector spent 6$ on one of these its got the outlet already ready to screw the bulb in, theyre rated up to 300 watts.  They have a reflector to direction the light already and it's a little dull so I used to extra mylar around the inside to make it more reflective.  AND to make things better they have that clip that you can secure to anything and rotate and tighten where you want it.  Seriously they work great!  I think they're a little safer than just using those socket things.  Hope this helps


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Offlinebm90191
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Re: CFL wattage question, help! [Re: bm90191]
    #609702 - 02/18/12 12:21 PM (9 years, 8 months ago)

also note the mylar is kind of important because the dullness absorbs light which creates a little more heat, not a whole lot if you had a big room but enough to raise a small one a couple degrees.  The mylar reflects and doesn't absorb so no heat is transfered to the metal reflector.


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InvisibleHarry_Ba11sachM
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Re: CFL wattage question, help! [Re: bm90191]
    #609703 - 02/18/12 12:22 PM (9 years, 8 months ago)

Yep, but that only holds one bulb. Mine has 8.


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Offlinebm90191
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Re: CFL wattage question, help! [Re: Harry_Ba11sach]
    #609704 - 02/18/12 12:26 PM (9 years, 8 months ago)

true but none of the lumens are wasted with the clip on reflectors and like i said the clips make em super easy to hang.  I guess i'm also ocd about things looking neat lol, I think a hanging bulb duct taped up (despite its an awesome idea and super effective) it would just bug me I wouldn't be able to deal with it haha


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Offlineibusturcherry
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Re: CFL wattage question, help! [Re: Harry_Ba11sach]
    #610241 - 02/22/12 09:45 PM (9 years, 7 months ago)

Quote:

Harry_Ba11sach said:
If you feel like putting some effort in you can get a nice reflector made up as well. Don't forget that more than 60% of the light from a bulb shines away from the plants, so reflectors are very key.

Here are two different reflectors I made for seedlings and clones using CFL's a couple years ago. Let me know if you need clarification on anything I did here;









Harry, where did you get those black hook ups for the lights?? im trying to get out of using an extension cord holding all the lights.


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InvisibleHarry_Ba11sachM
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Re: CFL wattage question, help! [Re: ibusturcherry]
    #610254 - 02/23/12 01:02 AM (9 years, 7 months ago)

Simply at a local hardware store in the electrical section.


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