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View Full Version : Newbie curious about light - compact fluorescent options



kidshowbiz
07-18-2011, 01:51 PM
hello everyone. i'm planning on building an aerospring system as presented in Keith Roberto's How-To Hydroponics 4th ed. book, which will be placed into a small closet. i've been researching lighting costs, options, and set-ups, since the lighting seems to be by far the most costly and crucial aspect of indoor hydroponics. I have been looking at 85-105 watt (350-400w equivalent) compact fluorescent bulbs to save on the monthly electric bill, particularly the two bulbs described below, although i am still unsure about specific requirements such as color temperature, spectrum, lumens, etc and whether or not these bulbs could provide enough energy for 6 or so plants ( i plan on initially growing tomatoes and peppers). Does anyone have experience growing indoors using one or more similar bulbs that could describe for me an ideal set up? Or am I on the completely wrong track here? Thanks!

Bulb options:

105 Watt - CFL - 400 W Equal - Mogul Base - 6500K Full Spectrum Daylight - Min. Start Temp. 0 Deg. F - 80 CRI - 48 Lumens per Watt - 15 Month Warranty - Sunlite 05559-SU
Screw In CFL

* Brand : Sunlite
* Part No. : 05559-SU
* Wattage : 105 Watt
* Voltage : 120 Volt
* Base Type : Mogul (E39)
* Bulb Color : Full Spectrum Daylight
* Bulb Shape : Spiral
* Dimmable : No
* Color Temperature : 6500K
* CRI : 80
* Diameter : 3.98 in.
* Length (M.O.L.) : 11.6 in.
* Incandescent Equal : 400 Watt
* Life Hours : 8,000
* Lumens (Initial) : 5,000
* Start Temp. (Min) : 0 Deg. F
* UL Listed : Yes
* Warranty : 15 Months
* Case Quantity : 6


85 Watt - CFL - 350 W Equal - 5000K Full Spectrum - Min. Start Temp. 0 Deg. F - 80 CRI - 68 Lumens per Watt - 15 Month Warranty - Global Consumer Products 0167
Screw In CFL
2 reviews

* Brand : Global Consumer
* Part No. : 167
* Wattage : 85 Watt
* Voltage : 120 Volt
* Base Type : Medium (E26)
* Bulb Color : Full Spectrum
* Bulb Shape : Spiral
* Dimmable : No
* Color Temperature : 5000K
* CRI : 80
* Diameter : 4.1 in.
* Length (M.O.L.) : 10 in.
* Incandescent Equal : 350 Watt
* Life Hours : 10,000
* Lumens (Initial) : 5,800
* Start Temp. (Min) : 0 Deg. F
* UL Listed : Yes
* Warranty : 15 Months
* Order Code : 85W/ODSP/50K
* Case Quantity : 12

Jake A
08-03-2011, 05:00 PM
If those two bulbs are your only choices, stick with the bulb that has the 6,500K Full Daylight spectrum. That will work as a decent bulb for moderate vegetative growth. I wouldn't use the 5,000K bulb, since it produces little of the plant-usable light spectrum. For flowering, you'll want to switch it out with a CFL bulb closer to 2,700K to produce a decent-size yield.

Garibaldi
08-17-2011, 02:19 PM
Find a graph of the actual wavelengths output by any light your are interested in and compare them to what plants need. You can't rely on vendor descriptions of what they call "Full spectrum" or even the common color temperatures. You can come up with the same overall temperature with many different mixtures of wavelengths, but one light may use more plant friendly wavelengths than others.

willard3
08-20-2011, 06:20 AM
HID lamps will be more efficient than fluorescent lamps and cost less to operate.
Spend more time learning about lighting, there is no silver bullet.