Distance from plants

Hello, the distance between plants and lights. I just put my 3 wk. old autos on the 600 watt mh lights, but don’t know how far they should be. I have them 24 inches form plant top. Any advice about that? Thanks Seadog

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i would say at least 24 inches and possibly more… just see how the plants react to it and adjust accordingly…


Place your hand at the top of the plant for a minute if your hand gets hot light would be too close.24 inchs does sound reasonable. @Hellraiser has used those lights. He’ll be alone to give a more accurate distance.


24" to 28" would be fine, watch your temps and have plenty of air movement between light and plants.