First grow with LEDs; tips for improving light coverage??

Well then feel free to check out the grow journal I'll be doing at least weekly updates, and the light has definitely been very beneficial as far as vegetative growth is concerned. Also I'm wrapping up all my training and won't be doing too much pruning anymore so you should really be able to see me take off these next couple weeks

DHizaay said:

Well then feel free to check out the grow journal I'll be doing at least weekly updates, and the light has definitely been very beneficial as far as vegetative growth is concerned. Also I'm wrapping up all my training and won't be doing too much pruning anymore so you should really be able to see me take off these next couple weeks

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Hiya DH! Looking good so far! I saw that you mentioned a light track but were concerned about losing intensity. If you do use a light rail you will be able to lower the panel down much closer to the canopy and not burn or bleach your plants because it will be constantly moving. Plus you will get much better coverage because of the angles a stationary light misses. If you think about it, the sun, best source of light for plants, does not stay in one spot in the sky. As the earth rotates the light is able to reach more of the plant. Light rails follow the same principal, so much more light is absorbed by the plant. Just my 2 cents worth.

Rock on!

JohnNeedsMeds said:

Hiya DH! Looking good so far! I saw that you mentioned a light track but were concerned about losing intensity. If you do use a light rail you will be able to lower the panel down much closer to the canopy and not burn or bleach your plants because it will be constantly moving. Plus you will get much better coverage because of the angles a stationary light misses. If you think about it, the sun, best source of light for plants, does not stay in one spot in the sky. As the earth rotates the light is able to reach more of the plant. Light rails follow the same principal, so much more light is absorbed by the plant. Just my 2 cents worth.

Rock on!

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I tell ya, some people...

PICOGRAV said:

I tell ya, some people...

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LOL Still trolling me I see pico. tsk tsk tsk

JohnNeedsMeds said:

LOL Still trolling me I see pico. tsk tsk tsk

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I would love to some pictures of your plants.

PICOGRAV said:

I would love to some pictures of your plants.

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I have never claimed to have grown a single leaf of anything bro. You know this. When I post it is to try and help others with things they may not have thought of yet. Your posts are usually negative and have little to do with helping anyone which is why you continue to troll and attempt to antagonize me into some sort of argument. Please stop trolling and hijacking other peoples' threads. It is so not becoming of a grower. Thank you.

I am sorry DHizaay, this guy follows me in threads where I post and will not stop trolling me. I called him out on a thread where he was trying to help a guy steal electricity and he will not let it go...

John

JohnNeedsMeds said:

I have never claimed to have grown a single leaf of anything bro. You know this. When I post it is to try and help others with things they may not have thought of yet. Your posts are usually negative and have little to do with helping anyone which is why you continue to troll and attempt to antagonize me into some sort of argument. Please stop trolling and hijacking other peoples' threads. It is so not becoming of a grower. Thank you.

I am sorry DHizaay, this guy follows me in threads where I post and will not stop trolling me. I called him out on a thread where he was trying to help a guy steal electricity and he will not let it go...

John

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You should be a politician, if anyone would like to know the reasons why this is the way it is:

https://www.rollitup.org/grow-room-design-setup/732094-what-do-i-need-know-5.html

Its a good read non the less, John, everyone's truths do come out eventually and any way you only have about a 100 or so more posts to go before you win, right?

PICOGRAV said:

You should be a politician, if anyone would like to know the reasons why this is the way it is:

https://www.rollitup.org/grow-room-design-setup/732094-what-do-i-need-know-5.html

Its a good read non the less, John, everyone's truths do come out eventually and any way you only have about a 100 or so more posts to go before you win, right?

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Sighs... Basically anyone reading that thread will clearly see the truth pico. Those who don't mind stealing from others will no doubt side with you. The good folks who find other ways to get what they need besides stealing it will side with me. It is an age old battle, good (me) versus evil (you). I think that is all that needs to be said here. Thank you for hijacking yet another thread. You are such a great and wonderful guy...

Again to DHizaay and everyone else on this thread. I am sorry that pico seems to need to spread his evil intentions wherever I post. My intention is to help others. His is to....actually I have no idea what his intentions are but they are of no use to anyone other than himself...

John

JohnNeedsMeds said:

Sighs... Basically anyone reading that thread will clearly see the truth pico. Those who don't mind stealing from others will no doubt side with you. The good folks who find other ways to get what they need besides stealing it will side with me. It is an age old battle, good (me) versus evil (you). I think that is all that needs to be said here. Thank you for hijacking yet another thread. You are such a great and wonderful guy...

Again to DHizaay and everyone else on this thread. I am sorry that pico seems to need to spread his evil intentions wherever I post. My intention is to help others. His is to....actually I have no idea what his intentions are but they are of no use to anyone other than himself...

John

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John, don't reply to this post.

Hey DHizaay in my experience blue dom. panels are great for vegging, though too much blue slows growth. In flower they will produce very short, leafy buds which is probably what you don't want. You will need an incredible amount of red light to run that panel during flowering. I think if you did add some 2700K-3000K light right now you'd probably see your plants really take off. Also I think your coverage problems with that light is the beam angles are for a fishtank. It was designed to penetrate water so the beam angles are probably very tight. It's probably delivering some very intense light, which is why they're vegging well but after the first 2 weeks of flowering you'll want that panel removed or raised much higher with lots of 620-680nm panels or bulbs surrounding it. Good Luck DH!

pico don't reply to THIS post...

FranJan said:

Hey DHizaay in my experience blue dom. panels are great for vegging, though too much blue slows growth. In flower they will produce very short, leafy buds which is probably what you don't want. You will need an incredible amount of red light to run that panel during flowering. I think if you did add some 2700K-3000K light right now you'd probably see your plants really take off. Also I think your coverage problems with that light is the beam angles are for a fishtank. It was designed to penetrate water so the beam angles are probably very tight. It's probably delivering some very intense light, which is why they're vegging well but after the first 2 weeks of flowering you'll want that panel removed or raised much higher with lots of 620-680nm panels or bulbs surrounding it. Good Luck DH!

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Hey fran! The lens angle is 90* which I thought would be workable, but I did go ahead and add about 100watts of warm white bulbs on either side of the panel thanks for the advice. Both the blue and white lights on my led panel are dimmable, do you think the blues will need to be dimmed during flower or will I be able to leave them on full power??

If you find the growth too leafy, then I would dim them. If you find the plants are looking stressed or taking in lots and lots of CalMag then dim them. Blue LEDs have different effects on different animals and plants bio systems and some times too much blue seems to really bother cannabis, though it can be strain dependent too I bet. Good Luck and Be Safe!

ask Google for "red blue Ratio Cannabis" or maybe this helps

Hmmmm I wonder if that's why one of the plants looked like it had a mag deficiency for the second time and the other ones have been fine. Maybe it's just getting a ton of blue light?? I always just thought the more light the merrier but maybe they've just been getting way too much blue, my panels 80 watts of blue and only 70 of white and that was all they were getting before

idk. Maybe read some other plant studies about excess blue. Here is the full list for spectrum: Clones / Seedlings

Blue Range 400-499nm .Peaks pref. @ ~ 410 nm , ~430 nm & ~453 nm : 20-25%
Green Range 500-550 nm .Peaks pref. @ ~ 550 nm : 20-25 %
Yellow-Amber Range 551-599 nm .Peaks pref. @ ~ 599 nm : 5-10%
Red Range 600-639 nm .Peaks pref. @ ~ 625 nm : 15-20%
Deep Red Range 640-670 nm .Peaks pref. @ ~642 nm & 662 nm : 5-10 %
Far Red Range 671-750 nm .Peaks pref. @ ~680 nm ,700 nm & ~730 nmm : 5-10 %


Young Plants

Blue Range 400-499nm .Peaks pref. @ ~ 410 nm , ~430 nm & ~453 nm : 10-15%
Green Range 500-550 nm .Peaks pref. @ ~ 550 nm : 10-20 %
Yellow-Amber Range 551-599 nm .Peaks pref. @ ~ 599 nm : 25-30%
Red Range 600-639 nm .Peaks pref. @ ~ 625 nm : 30-40%
Deep Red Range 640-670 nm .Peaks pref. @ ~642 nm & 662 nm : 10-15 %
Far Red Range 671-750 nm .Peaks pref. @ ~680 nm ,700 nm & ~730 nmm : 3-5%



Early Flowering

Blue Range 400-499nm .Peaks pref. @ ~ 410 nm , ~430 nm & ~453 nm : 8-10 %
Green Range 500-550 nm .Peaks pref. @ ~ 550 nm : 10-20 %
Yellow-Amber Range 551-599 nm .Peaks pref. @ ~ 599 nm : 10-20%
Red Range 600-639 nm .Peaks pref. @ ~ 625 nm : 25-30 %
Deep Red Range 640-670 nm .Peaks pref. @ ~642 nm & 662 nm : 25-35 %
Far Red Range 671-750 nm .Peaks pref. @ ~680 nm ,700 nm & ~730 nmm : 3-5%


Middle Flowering

Blue Range 400-499nm .Peaks pref. @ ~ 410 nm , ~430 nm & ~453 nm : 8-10 %
Green Range 500-550 nm .Peaks pref. @ ~ 550 nm : 1-15 %
Yellow-Amber Range 551-599 nm .Peaks pref. @ ~ 599 nm : 5-10%
Red Range 600-639 nm .Peaks pref. @ ~ 625 nm : 25-30 %
Deep Red Range 640-670 nm .Peaks pref. @ ~642 nm & 662 nm : 30-55 %
Far Red Range 671-750 nm .Peaks pref. @ ~680 nm ,700 nm & ~730 nmm : 3-5%


Late Flowering

Blue Range 400-499nm .Peaks pref. @ ~ 410 nm , ~430 nm & ~453 nm : 1-8 %
Green Range 500-550 nm .Peaks pref. @ ~ 550 nm : 1-10 %
Yellow-Amber Range 551-599 nm .Peaks pref. @ ~ 599 nm : 1-10%
Red Range 600-639 nm .Peaks pref. @ ~ 625 nm : 25-40 %
Deep Red Range 640-670 nm .Peaks pref. @ ~642 nm & 662 nm : 35-70 %
Far Red Range 671-750 nm .Peaks pref. @ ~680 nm ,700 nm & ~730 nmm : 3-5%

Essentially, "Photo-inhibition" means that the PSII photosynthesis channel (the part of the leaf's "power-plant" which is most light-sensitive) is being continually damaged. This damage is mostly being repaired, but the repair work is expensive. It requires the creation of a protein (D1), which means fewer resources are available to the plant for new growth. On top of this, the plant also needs to safely get rid of excess photon energy which would otherwise give-rise to dangerous reactive oxygen species (oxidants). Getting rid of this energy safely takes time and also costs the plant energy. This means that development can continue to be stunted even in dark periods as the plant works to rid itself of the energy.

In laymans terms, if you give a plant too much light (particularly blue light) the sensitive chemistry-set in its leaves gets frazzled, and energy is wasted repairing the damage instead of helping to grow new leaves and stem. This means that your plant grows slower, despite looking relatively healthy.

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Update if anyone cares they're under 400w HPS now... Been a busy couple months haha

The one in the front right gets less of the light and there's noticeably larger gaps between nodes and the colas are less full, but the other two look greaaaat