Just got my 3 150 watt HPS lights from ecnolight how far from the top of the plant should it be ? heres how i got it now

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Do the hand test method

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ok just did that my hand felt fine nothing to hot at all so thats good then?

get it as close as you can without burning them

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or having heat stress, youll know if its too far up the plants will stretch and if its to close they will burn

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i think its set pretty good now well see tomorrow if i need to move it a little more down
thanks for the help people

so it need more water more often now im guessing this is due to the HPS light. it appears the buds love the light.

6" or 8" to be safe to start, but using it vertically is a bad idea since most of the light comes off horizontally and just mounting vertically alone cuts HID bulbs output even further.

Hardly any light comes off the end of the bulb. Compare holding your hand under the end and then off to the side, see how much brighter off to the side is...

Also don't trap that heat in with foil, it's just for cooking turkeys and stuff.

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Bukkake Bud: It might taste like splooge but shoots smiles all over your face.
When you'll suck on just about anything~think Bukkake.

im trying to figuer out how to mount them that way, I have 20 other plants ready to go into flowering ill have 3 of those lights total I need to figure out how to mount them horizontally. im thinking i can lower them into like the middle of the plants i dunno fuck i thought these lights would be money

they ARE money. search around for the 150watt HPS inspirational thread, it shows different ways of setting the light up properly.