If you want to flower with t5's. 8 bulb- get 4 UVL Redsuns and 4 Zoo med flora suns. The bulbs only last around 10 months and light output degrades as fast as hid bulbs. But a much higher par (1800 umoles). How light is measured. The sun at midday is 2000 umoles. Digilux 1000 w hps is 855 umoles. (growers house) . Par t5 Gets a much higher grams per watt yield than a 1000 w hps. Replacement t5 bulbs gets very costly. The best lighting imo is inda gro induction, Area51 led, Apache Tech led, Hans led and magnum plus 2 led.
Since t5 is linear and not a single point of light ( inverse square law) you want to have the light about 2-4 inches away from canopy for best results.
On another note finally found a strain good for main lining. Dj short whitacker ]blues . Does not branch out for shit. You have to top it to force it. All my other strains got double the yield doing lst.
Day 18 12/12
I now realize how much indica or sativa a strain has is irrelevant to main lining. You want a strain that if not topped or trained at all would only produce a single cola. No secondary lateral branches at all. Those strains are much better for lst.
The whitacker is blueberry x quimby. 80% indica, 20% sativa. Out of all the blueberry and whitacker seeds I had. This was the only female. This one is seed. Imo clones produce better quality and yield than seeds. The next clones off this should be much better.