Color Change...

Not a question, but pretty cool.

Check out the two photos below. I changed the lights from 6500ks to 2700ks. Look at how different the plants look under the new lighting conditions. IMO, pretty cool. Yes, I know why.

yeah i know my plants are green with the hps's off.in natural light theyre the healthiest thing ive seen.]

hps is very red yellow huh....

I am not using HPS, but about the same color. I am using 2700k CFLs. Same lighting effect though. Pretty wild.

oi mate... U switched to cool light CFL's You should switch back because the other ones give off more red light.... which your plants like when flowering(producing bud)

Thanks Till, but I think you may have it backwords.

6500k = daylight or more blue for veg.
2700k = warm or more red for flowering.

I think the confusion is from my pictures being backwords. The current light is on the left. I vegged with the lights on the right.

The diffrence in the color of the plants also had to do with your eyes reacting to the light.

looks awesome,and ........yummy.....making my mouth water.........

Under the new lights they are growing like crazy. The 2700ks do produce more heat. More than I expected. They are 2600 lumens a piece as opposed to the 6500ks which are 1600 lumens. The temp last night when I got home from work was 95f. Way to hot, IMO. A little burn on the tips and the were not their reg very happy plants. No real damage though, as they had plenty of water.

On the back side of my grow box is the exhaust fan and port which I have had a foil covered over redirecting the air and the light. I removed it last night right before the end of the lights on cycle. I will watch it close today, but two hours into the cycle and they are still at 75f. I think they will be fine now.

ngtybear said:

Under the new lights they are growing like crazy. The 2700ks do produce more heat. More than I expected. They are 2600 lumens a piece as opposed to the 6500ks which are 1600 lumens.

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He does have it backwards.

Regarding the extra heat, as an engineer I would have thought you would have known why, and it's not because of the extra lumens outputted.

All lights, watt for watt will output a broadly similar range of heat, where some lights output higher levels of heat than others is totally dependant on their 'kelvin colour temperature' or amount of light spectrum output in the infra-red nm region. Lights with a low colour temperature such as 2700k will output far more light in the far red and infra-red regions of the spectrum wavelength than blue daylight 6500k lamps - that's where the extra heat source is coming from - infra-red.

I knew why, but just did not expect a 20 degree increase in heat. Especially considering the amount of ventilation I have and the push/pull system I have through the lights.

Than again, if I had thought it through I would have realized the push/pull will not help with the radiant heat. They are cooled off now though. For which I am thankful.

Hey babygro, another questions for you. What is up with the oil on the leaves? This started the day after I switched to the 2700ks. Their smell has changed (very sweet now), and the way they grow has changed. Not only are they growing faster, but like they are insane. Not the pretty sea of green anymore, but more wild ass shit growing all over the place! Pretty cool and they look very healthy, but very different. Thoughts?

I will take a couple of pitures and post now.

-ngtybear

ngtybear said:

Hey babygro, another questions for you. What is up with the oil on the leaves? This started the day after I switched to the 2700ks. Their smell has changed (very sweet now), and the way they grow has changed. Not only are they growing faster, but like they are insane. Not the pretty sea of green anymore, but more wild ass shit growing all over the place! Pretty cool and they look very healthy, but very different. Thoughts?

Click to expand...

Are you sure what you think is oil, isn't in fact just water being transpired from the leafs undersides? This could have happened due to the sudden increase in heat, more heat = more transpiration.

You'll always get a change in growth when you switch to flowering from vegetative growth, the stems start to elongate and stretch, some of the energy goes from cholorphyll production to flower production, hormone concentrations change. Your males will start showing themselves by growing taller and more lanky whilst your females should stay more compact and continue internode and foliage growth whilst starting to produce clayxs and pistills. Males are nearly always the first to show.

I changed the lighting settings a little to pull out the reds. Should be a little easier to see now.

I just took these. They look wilted, but are not. They are strong and moist, but they look wild. Not the gentle sea of plants I had a few days go before flowering.

Today I started misting them. We will see if this helps. Again, I do not think anything is wrong with them. The little bit of burn on a couple of the leaves is due to me not taking enough care with the nutes, from which I am sure they will recover just fine.

I can not wait until I can sex them and get them thined out and replanted. At that time I will drop them seveal inches.

Thoughts? Comments?