Lighting Question...To use or not to use T5's late flower???

sounwon

Active Member
Hey all...new grower/poster here and I must say this site has been a wealth of information. This is my first grow so I am still learning...

Firstly, the set-up...4 x 4 x 7 grow tent for flower, 2 gallon pots using professional mix soil, general hydroponics nutes, vegged until 15" and gradually flipped to 12/12 over the course of a week, cutting 1 hour light perday. I am using a 600w hps for flower and 6 39w 3' 6500k T5's for vegging.

Right now I only have a mom in the veg box and 5 kush (that's what I'm told my clones were) in the tent at day 41 of flower, so I'm wondering if there would be any benefit to putting the 3 T5's I'm not using as side or under lighting in the flower room? The plants are, and have always been, very healthy and taken care of. I have a small, but very nice set up. 4 x 4 x 7 flower tent, 4 x 4 x 4 veg box, carbon filter, cool tube, fans, humidifier and dehumidifier, air circulation...temps go no higher than 25 - 26 C lights on and 21 -22 C lights off, and ph is 7. The buds are filling in really nicely and are all nice and frosty and starting to get really really sticky and the hairs are really starting to turn red. Humidity stays around 50 - 55% in veg and 38 - 42 % in flower and the girls look awesome and are thriving. Next time I might go with a little bigger pot, but that's about it.

So what do you think? Use the T5's or will in just be a waste of time and electricity?
 
I used a T5 panel tilted sideways for supplemental lighting last grow, and only for the last two -three weeks of flower - All in all pretty much the exact same situation as you...
I also am using a 600watt HPS -

USE THE T5's - the supplemental cool (6500k's) will do a hell of a job during the last few weeks. The last few weeks of flower are the most important IMO because thats when they are really putting on weight.
Although you primarily want to have warm reds for flower, a better rounded spectrum with some cool blues somewhat improves quality and yield. I would not say it is a waste of time or electricity at all.
 
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