Lights underneath the plants

[Zandor]

ok, i have always had the problem of getting lights to the lower parts of my plants, tying them solves this problem but halves my growing space, if i was to place the plants on a glass table do you think i could put a 400w underneath the table pointing up to light the foilage otherwise untouched by light, and if so do you think its worth all the trouble?

Your theory is right but you should lower the light between your plants and use a cool tube to get it close. This will light up the lower branches and provide you the extra bud you are looking for. A 400 w HPS is only really good for a max of 24â?� of circumference light. Most experts are in agreement that light intensity diminishes exponentially fast.
For example:
A 400-watt MH from 0â?� to 12â?� is about the same luminance say 55000
Same light at 24â?� the luminance is now about 30000

Still good

Same light at 36â?� the luminance is now about 1200

Worthless

Itâ??s up to you, people who grow pounds on every plant light, top & all sides. With that much light your plants could effectively process Co2 and really benefit from the use.

Lighting the underside of leafs is not recommended, there is a better use for that light.

Zandor Reviewed by Zandor on 04-04-2005. Lights underneath the plants ok, i have always had the problem of getting lights to the lower parts of my plants, tying them solves this problem but halves my growing space, if i was to place the plants on a glass table do you think i could put a 400w underneath the table pointing up to light the foilage otherwise untouched by light, and if so do you think its worth all the trouble? Rating: 5