modular overkill led striplight build

some sleep and theyre good again.
Day 14 Flower



this region gets the most light, i think bleaching is starting.




same plant ,but in the corner.
the green is a lil better.


overall all is fine.
will see if the plant in the back will get used to the light, also will give more epsom salt.

cobshopgrow said:

technically yes.
what should be the outcome and which time frame?

forgot to say i still have the UVA running 5h a day.

Click to expand...

Faster flower development and overall growth. Just double the 660 output for the second half of the day for atleast the next few weeks.

ill consider, just want her to be in the i take all the light i can mode.

is there any link i can read some?

and wont simply going higher with the 660nmall day would do it too?

cobshopgrow said:

always not easy to read your plants.
this is one hour before lights out.
the 2 front plants arent dropping.
the outer edge
View attachment 4498389
the one in the back does.
View attachment 4498388
she will be back on track after some good sleep, but i am asking myself if thats not a tad too much for the one in the back.
i mean, were at below 20w a square feet, far below and the plant is clearly in to flower.
also it seems she start to feed through the magnesium, i always give some epsom with every feed, still hungry for it.

Click to expand...

This is crazy for less than 20w/sqft. Very nice!

cobshopgrow said:

ill consider, just want her to be in the i take all the light i can mode.

is there any link i can read some?

and wont simply going higher with the 660nmall day would do it too?

Click to expand...

I feel like it's easy to overdo it with the dedicated 660 diodes especially combined with far red. I got the qb96's since I thought they'd be a good mix with 3500K and 660s but I'm getting light stress at low wattage's.

the low energy consumption makes me wonder too.
i aim for at least 20w a square foot, but idk, looks like it dont work, now, day 14 of flower.
havent came behind it, i cant for sure trick the physics.

hm, there could be some truth silencio.
i go lower this run then last with the 660nm, not over 10% in relation to the mainlight, it slightly spikes the spektrum, but not much more.
cant say, i try to be carefull with it till i know better.
please share your further findings.

cobshopgrow said:

ill consider, just want her to be in the i take all the light i can mode.

is there any link i can read some?

and wont simply going higher with the 660nmall day would do it too?

Click to expand...

Yes, you can run the higher 660 all day at this point , especially if your plants are healthy and everything is on point.
Im sorry i dont have any specific links. Im basing my advice on my experience and ratios others are running.
Give it a shot for a few days and see how they look.
I forget, what medium are you running?

If you feel you are having light stress and not even hitting 25-30watts per sq ft you may want to consider your medium and fertigation program are not up to task.

the plants are doing well, just want to keep it like that.
i will give more during the next days, i can focus on giving more 660nm.

problems are minor tip burn, hard to say if its white or yellow.
and i have some yellowing leaves on the bottom,P,K, or Mg i would say.
leaves i will cut anyway, but looks to be on the edge.
just not sure if i am too high or too low with my fertilizer.

still playing with the values but atm i give about this.
N80
K170
P60
MG40
CA75
S50

i have just lowered the N a bit, before they had a tad more N and Ca.

they are in 10l Hempys, with 3/1 Perlite/Vermiculite.
looks i am doing better without cocos involved.

the mix gets watered 3 times a day atm by a small auto watering, 1L a day each plant.
guess the mix is hard to overwater, but i am bad in watering in general.

any suggestions?

beside that i think the rig is running quite efficient, quite sure i wont need 30w per square feet for optimal results.

Its good to see you documenting a diary with your approach to utilising mid power diodes. This is what those thousands of diodes were born to do. Run low. Love it.

cobshopgrow said:

So here it is in action.
3000k 80CRI, 660nm, 730nm, 365nm.

the 730nm and 365 are not really within our visual range, so they appear very dim.



only 660nm on

The 3000k main light as the 660nm strips are pwm dimmable.

I used one 8w meanwell for the 365nm leds a 6w meanwell for the 730nm and a HLG-40-48A/B for the 660nm.

Thats it so far.

Click to expand...

WOW. I just saw this, so awesome! Makes me really wish I could afford some nice framing for my lights. I will eventually once I get all the lights. You have one nice looking set up!

thanks man, really like these t-slot stuff.
it wasnt much money, a frame is 50 bucks with interconnects, below 30 just the aluminium bars.
somehow this t-slot is freakin expensive in the usa, there have to be something similar, cheap and avaiable which i simply dont know.

cobshopgrow said:

thanks man, really like these t-slot stuff.
it wasnt much money, a frame is 50 bucks with interconnects, below 30 just the aluminium bars.
somehow this t-slot is freakin expensive in the usa, there have to be something similar, cheap and avaiable which i simply dont know.

Click to expand...

That right there is Literally the only reason I haven't used T Slot for every build, is it's INSANE COSTS. But god, I'd love to make a change to the 20x20 extrusions. T slot is one of thee most amazing ways to build your frame with all its different connections and nuts. Fuck I wish I had a pallet of it.

there have to be something similar well priced in the biggest market of the world.

day 19
they can take more light now.
177W main, 17W 660nm
i could probably go higher just need to sort the yellowing from the bottom.
basically theyre eating a lot, especially the strange one to the left.

overall its fine

eating herself

one to the right is may a tad too green.

one in the back is doing fine now with the light.

am at EC 1.6 and hope its enough.

cobshopgrow said:

day 19
they can take more light now.
177W main, 17W 660nm
i could probably go higher just need to sort the yellowing from the bottom.
basically theyre eating a lot, especially the strange one to the left.
View attachment 4503445
overall its fine
View attachment 4503443
eating herself
View attachment 4503444
one to the right is may a tad too green.
View attachment 4503442
one in the back is doing fine now with the light.

am at EC 1.6 and hope its enough.

Click to expand...

They are looking beautiful. At this stage, the one on the left seems intent on draining the older fan leaves of reserves. I think you will see more and more, working its way up from lower down. Its almost like a timer has triggered inside the plant, even if nutrient/media is sufficient. I wonder if starting with different ratios would have an influence on this? Are you enjoying the smell?

cobshopgrow said:

there have to be something similar well priced in the biggest market of the world.

Click to expand...

He's beein cheap, 50 bucks will get you enough to get started.
Runnin my cutter uvb/c strips low as I can (about 15W per channel) and 20W uva for the middle 5hrs as all day was too much. Also with my mixed reds (660/730) 80W was too much 60W is much better ~10% light wattage.

Garden is looking good cobshop.

happy ladies, dude.

SSGrower said:

He's beein cheap, 50 bucks will get you enough to get started.
Runnin my cutter uvb/c strips low as I can (about 15W per channel) and 20W uva for the middle 5hrs as all day was too much. Also with my mixed reds (660/730) 80W was too much 60W is much better ~10% light wattage.

Garden is looking good cobshop.

Click to expand...

How long you had your uvb/c strips?

SSGrower said:

He's beein cheap, 50 bucks will get you enough to get started.
Runnin my cutter uvb/c strips low as I can (about 15W per channel) and 20W uva for the middle 5hrs as all day was too much. Also with my mixed reds (660/730) 80W was too much 60W is much better ~10% light wattage.

Garden is looking good cobshop.

Click to expand...

Wait you actually OWN these strips?
Because @Powertech has been waiting for his for several weeks.
When did you order and get yours?
What driver do You use for the strip? You run series through all 12 or split into the 2 separate UVB UVC channels?

end_of_the_tunnel said:

They are looking beautiful. At this stage, the one on the left seems intent on draining the older fan leaves of reserves. I think you will see more and more, working its way up from lower down. Its almost like a timer has triggered inside the plant, even if nutrient/media is sufficient. I wonder if starting with different ratios would have an influence on this? Are you enjoying the smell?

Click to expand...

thats a helpfull note.
thats indeed my pretty much only and biggest problem.
all are showing this behaviour, all are yellowing, to different degrees.
one to the left the very most.
she was strange from the beginning, but had always lots vigor, was praying always.
she also have a very low runoff.
i feed and feed like there is no tomorrow but she still have a lower out then in.

at least this is not direct light related! no burn or bleach, basically its a good sign i would say.

hard to say if its the ratio.


i played quite a lot with it haha, but during first week i had my nitrogen not that low, should had bene some 1:1:2 ratio.
think next time i will go higher earlier, the runoff should have told me.

oh and it started to smell