makes the rust coloured spots?
coloured spots appear on leaves when the nutrients have been sapped
out of them and when there is too much humidity in a room and where
water forms on the leaves it burns them. Usually adding an extra fan
or two for better air circulation and testing the nutrient levels
with a ph tester will correct the problem.
How many lights would you recommend for getting the best
results out of a room with 10 plants in a 12x12 area. The room is
well ventilated and has multiple vent fans.
If hydro is not a problem for you then I would suggest using 4
1000w lights and I would use the multi spectrum bulbs to grow and
bud with or two frosted halides, a clear halide and a hps.
I just got an air conditioner for my room
and the temperature went from 91f to 76f right when the lights were
going off. Is that going to hurt them.
As long as the plants are not budding they
should be able to adjust to the temperature change. I would try to
keep the room between 75-80 degrees. Severe temperature changes
during the budding process will cause the plants to hermaphrodite