New Grower I think i have made an Interesting Discovery...

[Mjøllnir]

Hello Autoflowerins,

I am currently mid grow with all Lowryder #2 females. I have 660 watts of florescent light. I have been using different spectrum lights in my indoor grow room. 1 2700K 250W CFL and 1 6500K 250W CFL + 160 watts of T12's 6500K . The side that had my 6500K CFL has several tall females. The one directly under the 6500K in 5 weeks and 1 day from seed grown to a height of 19 inches!?! The others on the 6500K side are 17 inches are just as old as the 19inch female. The females on the 2700K side have grown to a height of 15-16 inches respectively and the buds are further along. I was under the impression that autoflowers were not photosensitive like this but apparently I have tapped into some dormant Indica genes... All the resources on Lowryder #2 have indicated a average height is 10-16" So i am currently above average. Can I have some guru's clarify this for me? I am experiencing something out of norm or is this typical?

P.S. I have treated each female equally with water cycle, soil, PH testing, light and Nute feeding.

 

[Stunted]

Distance from plant to light can have a big impact on plant heights

Stunted Watts
:smokebuds:

 

[Mjøllnir]

Distance from plant to light can have a big impact on plant heights

Stunted Watts
:smokebuds:

OK, I am stuck there because both lights have been equally placed above the plants the entire time....Maybe it effects flowering stage only. That would suggest that on the 2700K side where the plants are 6" from the light and are getting more bud growth... but on the 6500K side I have had to move the light 3 times this week to keep it from getting to close........ why?

 

[kpex]

I would recommend you wait until harvest to make any determination. The key factor is light spectrum (temp range - refered to as Kelvin). Budding planks are knowm to like lower Kelvin temps when blooming and higher Kelvin temps when vegging. Thats why people use metal halide bulbs when in veg and switch to HPS in Flower. I believe you might be experiencing the difference side by side with both lights running parallel.

If you leave things as-is, your end result dry weight will most likely be the same. The 6500K plant merely stretched more. If you switch the plant location in relation to the light you might see a slight difference in production.

6500K during veg and 2700K during flower will theoretically give the best yield.
2700K during veg and 6500K during flower will theoretically give the lower yield (or lower potency)

(Assuming equal lumens)

Some argue this philosophy, but the lower the K - typically the stronger the plant - assuming commercially available bulbs. The K ranges for different species (of all plants) is somewhet well documented for indoor hydroponic growth. This is not canna specific but a function of Botany.

Good luck and let us know your end results!

 

[mr.mcgregor]

I love a good old side by side see what works best grow, however I belive the only true way to test would be to use cuttings from the same plant, then you know each will grow exactly the same as the other and your test will have fair results. growing from seed each one can & will grow sligtly (or even completly) different distorting your final results.