Plant signals that say the light is in the correct place???

So I thought I had my lights at the right height but they weren't perking up like they had been then I raised them and they worked back up so what I have is 2 100w actual draw led boards one Mars hydro ts 600 and a Chinese knockoff with the same spectrum so with them combined any ideas in the ideal height??

These are the distances that Mars Hydro and other Amazon sellers recommend.

Okay say I put it at 18 in would I need to raise it a little because of the other light in there also?

I'm in a 2x4 they say it's for a 2x2 each one if my lights but if I have them both in there right next to each other won't it increase the intensity

Rickypsimer said:

Okay say I put it at 18 in would I need to raise it a little because of the other light in there also?

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I'd start by putting them both at the same height. Since you're in a 2x4, the intensity isn't as intense. I'd then play around with different heights and watch the plants' response. What works for some people, their spaces and the strains that they're running might not work for you.