Ask a Grow Question

[chefmatt]

I just ordered a bar light that can have ir and deep red add I want to use the ir the most how do you guys run your timers for ir and is it worth it to add deep red

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Discussion

[surfdad_grows]

From what I’ve been hearing from here and other places, you only do the IR for 5 to 20 minutes a day. From what I remember reading and listening to. There’s other guys with more knowledge about using them.

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[jmystro]

There are deep red (680nm photosystem !) and far red (700 nm photosystem II) and infrared (700-3000nm pure heat). IR is pure heat doesn’t activate any photosynthetic activity.

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[chefmatt]

This is what I’m thinks of adding

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[jmystro]

Careful with that thing. 730nm will cause a similar reaction within the plant as being in the shade and cause cells to elongate. This is how branches can bend toward the light. The side of the branch facing light will have normal cells while the shaded side’s cells elongate causing a bend.

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[chefmatt]

My lan is to run them 15 before lights on and 15 after I’m a big auto grower and trying to push the limits of them thanks for the info

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[unclee]

I have this same light. I use it for flower because it has far red leds spaced in it bar. It makes mine stretch a bit more than my other light without them. I like the stretch in flower to give better light penetration.

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[BePennjier]

I ordered the IR15, should arrive monday.

I intend do use it to get the “wake them up” and “put them to sleep” effect. not entirly sure about the exact timing yet but people usually say 10-20 min before and after lights go on and off. to mimic sunrise and sunset. (sun over the horizon->light has to travel longer through the atmosphere-> shorter wavelengths get more absorbed than longer IR waves->increased IR in the light)

the other use is to get the shadow response for stretch witch sounds to be usefull for autos. in this case you’d run it all the time your lights are on. plus the 15 min before and after if you don’t do 24h lights on. (same as with the atmosphere-> IR penetrates deeper->plants think they are in the shadow->they stretch to get to the light)

someone will tell me where I’m wrong and how to use them lights correctly so just in case: UV for more Terps’n’Stuff, the 660nm far red/deep red for the Emerson effect for more photosynthesis (but I personally don’t think that those are very usefull with the kind of lights we have today but I don’t have any experience with them or know someone who uses one) and the 730nm IR for plant steering.

That’s how I understand it

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[jiimii]

I have the exact same brand just the deep red light bars. This is my 4th run using them and I can tell a difference in the size & density of the buds compared to not running it from pre-flower till harvest.

They run the same 19-5 on/off cycle as my lights.

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[BePennjier]

My IR15 just arrived. This came with it

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