T12

1 in 2.5cm

1625 in 1.6cm1

Watts

Initial Lumens

26

1800

55

3500

60

4000

65

4500

85

6000

95

7600

12

9000

125

9500

150

12,000

200

15,000

Lighting and specialty stores sell CF lamps, but often charge more than discount warehouse stores. Look for deals at Home Depot and other similar discount stores. Check the Internet, for example, www.lightsite.net is an outstanding site that also has a retail store locator. Philips is producing some of the higher wattage lamps. Their PL-H bulb is a 4U bulb available in 60, 85, and 120 wattages with Kelvin ratings from 3000 to 4100.

Beware of manufacturer and reseller web sites making outrageous claims about CFL perform-

Ftuorescent lamps arc great for rooting cuttings. Some people even use them to grow cannabis. Buds that ¡lower under liuorescents lack density and weight a nee, The most common exaggerated claim is found at the Lights of America site about the 65-walt Florex security light. The package claims the lamp produces 6825 lumens, but an asterisk directs you to the bottom of the box and explains these are "brightness lumens" not "photometric lumens." A look at their website www.Iightsofamerica.cnm claims the 65 watt Florex produces 1550 lumens. We tested them and we can agree with 1500 lumens.

1 in 2.5cm

1625 in 1.6cm1

bulb sockets. Larger 95, 125, 150, and 200-watt bulbs require a larger mogul socket. Common wattages used for growing cannabis include 55, 60, 65, 85, 95, 120, 125, 150, and 200.

This end view of different sired fluorescent lamps shows their diameters.

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