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Quote: hopanshrubman said: ....so would that mean I wouldn't need a ballast for this?
No. You still need a ballast! ALL grow bulbs screw into a socket. A 1000W bulb will screw into the same socket as my 400W bulb. Neither one of them will screw into a regular light socket. The bases are different.
How far you put your light is dependent on how good your ventilation is. The closer the better. As you can see in the pic my plants are less than 8" from the 400W bulb inside the reflector.
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