Biological Graffity
Active Member
wow...guess the old saying holds true....those lieing hydro pharm bastards...guess Ill plug it in and watch the temps...not encouraging....
the ratio is a geometric progression unfortunately: one foot away from light source is 50% usable lumens, 2 feet is 30%, 3 is 15%, ect... there are lumens that can be used at 7.5 feet but so few as to be growing under something like an incandescent bulb... that ratio is not exact, but close enough to count... that is why so many people use ducted and sealed light elements: so that they can run their light closer to the tops of the plants, also why the 4's and 6's are so popular (they are cooler than the 1ks by a lot and thus can be placed closer to the top of the canopy, as well as losing less lumens during growth)...mane brookies has this one. you loose lumens as you pull away from the plants, (i don't know the ratio but its steep) so the farther you pull your bulb up the weaker it is...
your in the big fight of growing, making everything balance.. good luck
I had a problem finding anyone who would fill anything but their own tanks.My own tank, so I can buy propane from anybody.