for enery saving CFL light that use 23w but its equal to regular light bulb that use 100w light. am i really getting 100w? if so, can i use 10 CFL energy saving light bulb to get 1000w light.

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sorry, this is kind of a pet peeve to me.

watts has NOTHING to do light output

watts (in reference to lighting) = units of energy consumed by the bulb

when they say on the package "equivalent to 100W!" it means it outputs *roughly* the same number of lumens as a 100W incadescent light bulb (not a metal halide, or high pressure sodium light)

light is measured in something called "lumens" (if you look on the packaging for your CFLs, *most* of them tell you their lumen output as well as colour temperature - both of which are important factors to know, just like a MH light is not good for flowering, high-temperature CFLs are not optimal for flowering either).

most 23w CFLs output 1600 lumens, but there is variance from that number.

CFLs on your average store shelf will come mostly in colour temperatures of 2700K and 6500K (i've also seen 4100K bulbs and 5100K bulbs) the 2700K bulbs are good for the flowering cycle and the 6500K bulbs are good for the veg cycle... but using a mix of both during both cycles seems optimal, you just change the ratio around.

please read this thread: Answers about CFL, HPS, How Much Light...


CFLs can be pretty good... i am having some pretty good success with them, but read that thread before investing in them... there is alot of really good information in the first post.

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California Orange Bud CFL grow log

Excelent threads:
CFL, HPS, MH lighting... how much?
What are CFLs and how can I use them for growing?

sorry i didnt see that thread...thanks! i understand now