Fan blowing at lights?

Will a fan blowing at 70w hps cool it down? or at any light? or it will just distribute the heat?

I try to have my fan blowing between the light and the top of the canopy. This disrupts the heat waves and allows the light to be closer to the canopy.

Ya man, just let the fan blow form the bottom to up, it will keep the light cool and keep the plants strong!

Little Tommy said:

I try to have my fan blowing between the light and the top of the canopy. This disrupts the heat waves and allows the light to be closer to the canopy.

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agreed.

this also helps to refresh the leaves.

a fan blowing at the lights will not be as good as an adequate exhaust fan to help cool and replenish the air.



J

Imho the best way to go about light cooling is to have openings on the front and back of the lamp with intake and exhaust ducts running to outside the growroom; often up into the attic. Then have air blowing across the canopy level to cool the parts of the plants closest to the lamp.

This time of year, the outside air can be used to completely cool lamps in most areas. I've had the glass on 430w lamps ice cold when the light's been on all day and cooled with winter air.

it will help reduce the zone of increasing heat surrounding the bulb, it will also slightly increase the ambient temp in the whole area (or at least spread it out a lot more).