New Grower mars2 900 question

36 inches for seedlings is good n safe, if they stretch too much, lower the led if wanting shorter plants, if wanting tall ones, raise the led when the plant grows higher, let the plant chase the led, then raise again. keeping the distance between led and plant constant, when at highest point let the plant grow up to it.
For older plants, in full flowering, some lower them down to 8 inches,. but be careful of bleaching at that distance, some leds do it some don't, in the case of the mars 900, it should be ok,. test and try, one other thing is the mars II series glass panel at the front can get quite warm, so keep a eye out for leaf burn.
For both? seedlings and older plants, id have the seedlings lower, 24 - 36 inches, the older ones closer to the led.
 
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