i use a cooltube with 600W hps in my tent.( 1,2 X 1,2 X 2 metre ) . i keep the cooltube 30 cm away from the canopy,but the plants on the corners and edges can not get enough light. (i grow 7 plant in 11L pots. plants are 3rd week of flowering) i will put 4 X 60W CFL bulbs on the corners of my tent . how do you use your cooltube ? cooltube cannot spread the light properly in my tent.
same here im using a 2x4 plant and it still seems like all edges of my tent dont get efficient light with a 400 watt hps and a cool tube.
