Play4aBuck wrote:

Hi,

I have some new seedlings growing, but I'm a couple of weeks late planting
them. Can I make up for lost time by running my grow lights longer? Do
plants need a rest (darkness)?

Yes. Conversion of sugars to starches in the roots requires darkness.
Allow 8 - 12 hours' sleep per day. Check your newspaper for sunrise and
sunset, set the timer accordingly.

How close should I hang my light? I have a 4 light bulb setup, with 2 grow
bulbs and 2 regular bulbs (cool white maybe). It's your standard 4 bulb -
4 foot ceiling fixture, hanging from a ladder over the plants on the ground.
The plants are about 2-3 inches tall, too many varieties to mention. The
grow bulbs say 12 - 15 inches, but I'm in a hurry! :-)

Assuming those "bulbs" are fluorescent tubes, 2" is right.