Ok thanks. I do have a bloom switch. Your saying I should use both lights? I will run a small heater to bring temp up.
Ok bud.. Quick lesson in photons. 600 watt LED = 250-290 watt from wall depending on brand. THATS FULL POWER. If you only run the blues, you're cutting it in half down to 125-150 watt FROM THE WALL. Looking at your pic, you're growing 4 pots in a 2x4? Maybe a 4x4? So if you're running a 4x4, then each square foot = 25-35 watts of light per pot.. If you're running a 2x4, you have more watts per sq ft but with 4 pots, you'll run into light penetration issues before you even flower.
That's like nothing for growing veggs.. On full blast from 600 LED in a 4x4, you're at best getting 50-60 watts per pot which would give you JUST enough to have your pots grow at a "normal pace". ALSO!!! The reds on your LED give off heat. Not the blues. If you run both options, it should raise the temp by about 5-10 degrees in tent.
Ex. I run 2400 watts LED in 8x8. That's 1200 per 4x4. That's 590 from wall. Which comes to around 80 watts per pot.. At 9 inch off canopy, I still get 250 PAR at corners and 600 PAR center with temp around 85 in tent with room temp at 67..
I use T5 8 bulb 4fters for first 7 weeks in my small veg tents. A T5 in a 4x2 keeps tent super lit and temp in 80s. A T5 light signature is like your LEDs both blues and reds together just with added temp heat due to gas.. After I do my final top, super crop and LST on week 7 or 8, I transfer pots into my big tent 8x8 and run my four 1200 watt LED at full blast last 2 weeks of recovery. Veg recover much faster under both red and blue. Then already in big tent, I transition them with no change in light signature. Red provides the heat which keeps temp about the same as my T5 in a single 2x4.. If you're only running blue, it's like your plants are living in the ocean. They sell 10k lights for aquariums and some growers use deep blues to finish flowering but it's not enough for plants meant to grow outside the ocean.
Side note, quality of photons matter. 600 watt full spectrum white LED with only 300 watts from wall will substitute the strength of burple LED greatly.
My 1200 burple might give off ALOT of power but a 600 watt full white will provide FAR superior PAR and sun like colors that would allow closer to canopy and better quality bud at the same rate of growth but they're super expensive..
It's all preference. First figure out why you're growing. Personal use. Business venture.. ect. Each have their own standards.
I'm about to switch from 4 1200 watt burple to 4 600 watt full whites. Save half on electric, DOUBLE PAR center and triple PAR on corners and most importantly, provide plants with "real" light. So I might lessen the amount of photons per sq ft, but the increase in quality will supercede the loss of power dramatically. T5 4ft 8 bulb has around same Watts from wall as your 600 watt LED on full blast.
Avg price of 1200 watt burple = $500.
Avg price of 600 watt Full Spec = $1500
Both are LEDs.. Commercial growers only use Full Spec if they use LED at all..
Bottom line.. Use either T5s, or both Veg & Bloom options on your LED.
