t5 specturm mix

[fatbottoms]

I'm fixing to switch to bloom and wanted to hear what spectrum has worked best for everyone using t5 lights (4' 8 bulb).

I've heard people say mix of bloom and veg: Veg - 6 6400k and 2 2700k Bloom: 6 2700k and 2 6400k

Or an even mix of both bulbs.

Has anyone tried different combinations and figured out what works best for them...anyone done all veg bulbs during the entire bloom?

 

[keysareme]

Mix it up, you will be very happy.

 

[kinddiesel]

yes, I bloom with the 2700k bigger yield. then flop the 10000 k bulbs in for more frosty buds when you start flushing .. if not possible then the 6500k bulbs will work . it does make a difference. I suggest only flowering with the 2700k until they stop getting fat. then switch the bulbs. trust me the quality will be the same as if you just flowered with a mixed spectrum of 27 and 65 k bulbs. those 6500 k bulbs don't give that much yield. the quality is all brought together with the last 2 weeks of flowering . for us well some or most commercial growers . they use hps until last week or 2 then switch to mh bulbs. same as what you need to do with those cfl. lot of people running mh 6500 k in early flower. for first 2 weeks to slow down stretch. some. but then switch to hps 2700 k get yield then back to 6500k. hope my experience helps you .

 

[keysareme]

That's good postin'

 

[fatbottoms]

yes, I bloom with the 2700k bigger yield. then flop the 10000 k bulbs in for more frosty buds when you start flushing .. if not possible then the 6500k bulbs will work . it does make a difference. I suggest only flowering with the 2700k until they stop getting fat. then switch the bulbs. trust me the quality will be the same as if you just flowered with a mixed spectrum of 27 and 65 k bulbs. those 6500 k bulbs don't give that much yield. the quality is all brought together with the last 2 weeks of flowering . for us well some or most commercial growers . they use hps until last week or 2 then switch to mh bulbs. same as what you need to do with those cfl. lot of people running mh 6500 k in early flower. for first 2 weeks to slow down stretch. some. but then switch to hps 2700 k get yield then back to 6500k. hope my experience helps you .

I was going to go with the 6 bloom an 2 veg bulbs for the bloom, but I think I'll try it your way.

Also, I'm into day 30 and 40 of a 7 plant grow, but all the plants seem so short and stunted with none of the nodes more than an inch apart.

I would of flipped already, but but wanted to get some more height as none of my plants are more than a foot tall, but they look extremely healthy and green.

I'm growing five different strains that are mostly indica dominant, I believe - Golden Goat, OG Skywalker, Presidential, Wrecking Ball, and Querkle or Blue Dream.

If I want more stretch during the veg, should I put in a couple of bloom bulbs?

 

[PetFlora]

Damn, how come I never heard of this? Been mixing hot5s as an early poster to The Professor's thread. Maybe I dismissed it

I only have 4-5 days left

From L> R

WAS: 3 ZooMed Florasuns + 1 Wave Point Coral Wave + 2 FS + UVL Red Sun + Quantum 2900

NOW: 1-3 FS + 4 Quantum 6500 + 5 CW + 6 6500 + 7-8 FS

Pretty frosty now, but more is better

yes, I bloom with the 2700k bigger yield. then flop the 10000 k bulbs in for more frosty buds when you start flushing .. if not possible then the 6500k bulbs will work . it does make a difference. I suggest only flowering with the 2700k until they stop getting fat. then switch the bulbs. trust me the quality will be the same as if you just flowered with a mixed spectrum of 27 and 65 k bulbs. those 6500 k bulbs don't give that much yield. the quality is all brought together with the last 2 weeks of flowering . for us well some or most commercial growers . they use hps until last week or 2 then switch to mh bulbs. same as what you need to do with those cfl. lot of people running mh 6500 k in early flower. for first 2 weeks to slow down stretch. some. but then switch to hps 2700 k get yield then back to 6500k. hope my experience helps you .

 

[jabba108]

I'm experimenting now with the 8 bulb t5. Only 2 weeks into the grow and I'm using 4- 6500 k, 2- 10,000 k, and 2- 10,000 k UVA lights ( all agromax). The UVA lights are supposed to replicate the sun better, so I've read. Ill let u know how it turns out

 

[PetFlora]

kinddeisel

Do you swap out all for 10ks?

After swapping 2, later I swapped out one more, but could do more still

Like I said I am now 3-4 days away

 

[PetFlora]

After more reading, it seems it's the 380-440 nms that juices the trics.

I actually had 2 ATI Blue Actinics in my closet, so today, I swapped out 2 lights (Q 6500 + ZooMed FS)

kinddeisel

Do you swap out all for 10ks?

After swapping 2, later I swapped out one more, but could do more still

Like I said I am now 3-4 days away

 

[Guillermo420]

I'm experimenting now with the 8 bulb t5. Only 2 weeks into the grow and I'm using 4- 6500 k, 2- 10,000 k, and 2- 10,000 k UVA lights ( all agromax). The UVA lights are supposed to replicate the sun better, so I've read. Ill let u know how it turns out

im wondering how you liked your spectrum mix

 

[ODER94]

I'm fixing to switch to bloom and wanted to hear what spectrum has worked best for everyone using t5 lights (4' 8 bulb).

I've heard people say mix of bloom and veg: Veg - 6 6400k and 2 2700k Bloom: 6 2700k and 2 6400k

Or an even mix of both bulbs.

Has anyone tried different combinations and figured out what works best for them...anyone done all veg bulbs during the entire bloom?

Do u see a difference when u mix the bulbs in bloom ?

 

[MichiganMedGrower]

I can't find the article but I just finished researching this and bought a 315 ceramic metal halide for finishing.

There are some tests out there now that showed using the bulbs with more uv the last few weeks added up to 4% thc to the same strain.

The test where they used it all the way through flower gave the same results but lower yeild. So they stick with HPS until the last two to three weeks as stated above.

I mention the ceramic light because a bit less intensity and a full spectrum after blooming under my 600's HPS lamps is my plan.

If I used t-5's I would use mostly the red blooming bulbs and then add back the 6500's or even a new bulb with the better spectrum plus uv. Like Hortilux or HTG. So maybe the 6 red and 2 blue for bloom and add 2 more or even all of them blue or uv added the last few weeks.

But according to the University of Utah up to 50% blue to red light in flowering cannabis shows better growth and health to the end. So it's worth testing of you have the bulbs.

It was previously thought 25% blue was sufficient from the University of Michigan but those tests were not on cannabis.

But my Hortilux super HPS spectrum does well and it has 25% added blue. I get no complaints but if it can be better......