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cfl height bud size

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    250w Horticultural CFL - Height above canopy?

    Have an Apollo 250w Horticultural CFL grow light and need to know the optimum height above canopy it should be placed above the canopy during both the Grow and Flower cycles. The last grow I did {my first successful one} I tried to keep it as close as possible as you would with a normal CFL bulb...