Dope Seeds ...................Dutch Passion - Masters At Work






Page 2 of 2 FirstFirst 12
Results 11 to 18 of 18
Like Tree6Likes

Thread: best prices for cfl bulbs???

  1. #11
    CanadianBudz
    Guest
    Thanks Andy :)

    Knew there was something to it, I was talking about side by side too, figured that's how most people would have them

  2. #12
    R.I.P. Gone, but not forgotten. Nelson's Avatar
    Join Date
    Jul 2011
    Location
    southern Quebec Canada
    Posts
    2,270

    Awards And Staff Icons

    What you really need to settle your point isn't a lumen meter. I think the reading your looking for is in the foot candle field. Even better is a par meter whick you can use to measures the light at various points from the top of the plant, the middle of the plant and the base of the plant. The reaspm you do this is because the penetration of the light to the different levels is very important/ Par meters are the right choice because they measure all light in the growing band and ignore the UV and the Infrored. Par meters are expensive so not too many people have one.

    I don't have one so I go by the next best thing. I have a hand held light meter for cameras. I can measure the light at the different points and compare the readings one light source to another.

    I personaly retired all my 23 watt CFLs. I have moved to the 42 and 45 watt units (equivilant to 200 watt incandesent) Way more light intensity than the 23 watters were delivering. I ended up liking the bright white models (4100K color temperature at its peak) sold by Walmart and made by Globe. They put out a little more than the GE models sold by Canadian Tire. I also liked the color temperature better as the Ge ones looked on the yellow side. They have a great waranty of 7 years. They are good about doing the replacement. Just keep the sales slip and include the bar code strip off of the box that the bulb comes in. No need to return the bulb just send in the 2 pieces of info and they send you a new one postage paid.


    Quote Originally Posted by CanadianBudz View Post
    Do you have a lumen meter or a source for proof? I haven't been able to find anywhere that someone proves either side yet, I still stick with bigger is better
    CanadianBudz likes this.

  3. #13
    CanadianBudz
    Guest
    Man, lighting is a whole 'nother animal, hope I don't think about it too much, I'll end up buying all sorts of gadgets and testing theories

  4. #14
    AndyBotwin
    Guest
    Quote Originally Posted by Nelson View Post
    What you really need to settle your point isn't a lumen meter.
    Yep, it's worth making the point that lumens are a measure of what the human eye sees, which really has very little to do with what plants want.

    Regarding the small vs. large CFLs, I found out when researching it that the larger bulbs aren't quite as efficient. The 42w bulbs are in the sweet spot of maximum lumens per watt:

    CFL lumens per watt:

    250w - 60
    200w - 60
    150w - 52.667
    85w - 49.412
    65w - 52.308
    55w - 65.454
    42w - 66.667
    40w - 66.25
    32w - 65.625
    30w - 66.667
    27w - 64.815
    CanadianBudz, Nelson and Joe Dirt like this.

  5. #15
    Bushdocter
    Guest
    great info!

    I found longstar 105w 2700k for 23.47 plus a 10%0ff code
    CanadianBudz likes this.

  6. #16
    Bushdocter
    Guest
    85w 3200k for $19ea. shipping included, 3200k out of the ideal colour?

  7. #17
    R.I.P. Gone, but not forgotten. Nelson's Avatar
    Join Date
    Jul 2011
    Location
    southern Quebec Canada
    Posts
    2,270

    Awards And Staff Icons

    I think it is a fine color. Is it the regular household Edison base? Where is it at?



    Quote Originally Posted by Bushdocter View Post
    85w 3200k for $19ea. shipping included, 3200k out of the ideal colour?

  8. #18
    Bushdocter
    Guest
    Hi Nelson,
    there here on ebay http://www.ebay.com/itm/390313158045...84.m1438.l2649

    pretty sure they are edi screw

Page 2 of 2 FirstFirst 12

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
""