I started using a metal halide light a few years ago. The light is so
strong almost no hardening is needed. Just put the plants out on a
partly cloudy day and they should be OK. A reciprocating fan aimed at
the plants under the light will help them get used to wind. This year
I got a new "blue" halide bulb. The plants are so squat and thick I
didn't bother with the fan.
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