Step into my grow room
- Thread starter MrFlux
- Start date
MrFlux
Well-Known Member
Looks good to me. Your Tc gets 44C above ambient, that's a bit better than what I get. You T-bars are 50x50mm and mine are 30x30mm so that might explain. When you get some air flowing along the bars the temperature will drop a lot. This will improve the efficiency of the light by a few percent, not really a lot but it might be worth doing it. Do you have a thread going or any pics? I'd be curious.
lazaah
Well-Known Member
I may share pics when I do the 5x10 build. I found that there were a few things I went ahead in the dark with, that I would of been more confident about given there was more info available. Given I've been on this site for 7 or 8 years and never really contributed, I feel I need to give back and a tutorial would be a great way to do that. My hesitation is I live in a non-friendly country, and do not want the attention that a popular tutorial could bring. Even though my interests lay outside of Canabis cultivation, it is illegal for me to knowingly give advice to someone about something that could be used to carry out a crime.
Besides, I still need to find a good way to estimate tj, what voltage each string is running at and how to measure that, and figure out how to use the dimming (I brought the B models).
On that note, measuring voltage in parallel to the strings I see 76.6 @ 700ma, isn't that a little low? 53 watts. When the dimmer circuit is not connected it should be running at 100% yeah?
Big thanks by the way flux, and all the others that have spent the time knowledge mining. It is hard to express ones gratitude via the interwebs.
Besides, I still need to find a good way to estimate tj, what voltage each string is running at and how to measure that, and figure out how to use the dimming (I brought the B models).
On that note, measuring voltage in parallel to the strings I see 76.6 @ 700ma, isn't that a little low? 53 watts. When the dimmer circuit is not connected it should be running at 100% yeah?
Big thanks by the way flux, and all the others that have spent the time knowledge mining. It is hard to express ones gratitude via the interwebs.
MrFlux
Well-Known Member
It puzzles me what sort of configuration you have if you measure 76.6V. That looks like 3 soft running Vero 10's or something. The Meanwell B model should indeed be running at full 100%.
indianajones
Well-Known Member
that voltage seems high to me. the data sheets list the voltage as 26.5-28.4, @350-700mA. That makes the wattage 9.3-19.9w. I'm not familiar with what happens if you run in parallel though, maybe that's what I'm missing. I'm trying to figure all of this stuff out, I see a DIY build in my near future.
lazaah
Well-Known Member
It actually makes the voltage a little low. When LEDs are run in series the voltage stacks, when in parallel the current is divided between the strings.
I guess I grabbed the wrong driver, should have gone with the 1050 not the 700.
MrFlux
Well-Known Member
Small update of the cab this morning
20 plants flowering in a 4x5 grid. Blue Dream day 47F on the left, then a blue dream day 2F, then a C99 day 13F and on the right a blue dream day 40F.
The big blue dream
This thing is top heavy. The flavor and potency is already there and I plan on chopping it early, like tomorrow. At day 48F that's three weeks earlier than the previous run from seed.
Meanwhile in the veg room
There are three topped ICE plants in the background. In the middle five C99's clones. Since I don't keep mother plants these clones were taking from the cindies that are now flowering, directly before they went into flower. That makes these clones 13 days old and they have already grown twice the size and have roots hitting the sides. The Lemon Kush clones on the right are much slower, having already spend a month trying to take root. In the foreground a batch of blue dream clones taken two days ago.
20 plants flowering in a 4x5 grid. Blue Dream day 47F on the left, then a blue dream day 2F, then a C99 day 13F and on the right a blue dream day 40F.
The big blue dream
This thing is top heavy. The flavor and potency is already there and I plan on chopping it early, like tomorrow. At day 48F that's three weeks earlier than the previous run from seed.
Meanwhile in the veg room
There are three topped ICE plants in the background. In the middle five C99's clones. Since I don't keep mother plants these clones were taking from the cindies that are now flowering, directly before they went into flower. That makes these clones 13 days old and they have already grown twice the size and have roots hitting the sides. The Lemon Kush clones on the right are much slower, having already spend a month trying to take root. In the foreground a batch of blue dream clones taken two days ago.
Hot Diggity Sog
Well-Known Member
Your small pot size and close spacing is impressive.
What are the dimensions of those wide white containers you're using?
What are the dimensions of those wide white containers you're using?
MrFlux
Well-Known Member
They are 60 cm long, 16 cm wide and 14 cm high. The volume is 9.5L. They are from Elho and cost about 3 euro.
The small pot size works because of the living soil inside. The beneficial fungi have turned the soil into a tight sponge-like mass that would not even need a container any more: It keeps its shape and bounces back when pressed. The plants are plugged straight into this fungal matrix and get their heavy nutritional demands met in large part through mycorrhizal symbiosis with the fungi. The living soil works as what the military would call a force multiplier.
bicit
Well-Known Member
Mr.flux: What power supply do you use to run your cooling fans? Are they running full speed or do you have them dimmed at all? How thick is the material of your Heatsink bars? I have quite a few questions about your soil too, but I'm not sure how to ask them lol.
Thanks!
ETA: Wanted to compliment you as well, such a clean build is amazing. Do you plan on adding any monochromes to your flower chamber in the future?
Thanks!
ETA: Wanted to compliment you as well, such a clean build is amazing. Do you plan on adding any monochromes to your flower chamber in the future?
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cityworker415
Well-Known Member
Lab type clean. Nice BD pretty sweet
Sent from my XT1060 using Rollitup mobile app
Sent from my XT1060 using Rollitup mobile app
iPot
Well-Known Member
Volts don't kill you amps/currents do.
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churchhaze
Well-Known Member
Okay, I hear this a lot... I finally have to bite.
I often hear people saying "Voltage doesn't kill, current does". Although it's true, the statement itself is very misleading and often used to justify stupid behavior.
High voltage is particularly dangerous. It's very unlikely that a 5V usb connector will deliver over 100mA through you, even though it's technically capable of driving 500mA.
Ohms law, or V=IR pretty much says that the higher the voltage across you, the higher the current will be... and current kills.
100mA of current through the heart can kill you. Be very careful with higher voltages. Like fire and knives, you don't have to fear it, but you must respect it or it can easily kill you.
I often hear people saying "Voltage doesn't kill, current does". Although it's true, the statement itself is very misleading and often used to justify stupid behavior.
High voltage is particularly dangerous. It's very unlikely that a 5V usb connector will deliver over 100mA through you, even though it's technically capable of driving 500mA.
Ohms law, or V=IR pretty much says that the higher the voltage across you, the higher the current will be... and current kills.
100mA of current through the heart can kill you. Be very careful with higher voltages. Like fire and knives, you don't have to fear it, but you must respect it or it can easily kill you.
iPot
Well-Known Member
Do you have two of these in the flower area? I see you say you got 400+ grams from 385w.
What model vero 10 did you get? http://www.newark.com/webapp/wcs/stores/servlet/CompareProductsDisplay?catalogId=15003&langId=-1&storeId=10194&catentryId=48201790,48260091&pageType=PLP
I cannot spot the difference....
Is there any reason you went with 50 vero 10s for 385w other than the higher wattage leds like cree or the higher wattage vero? It seems they all manage to get 1gpw plus.
I also have a question about the driver. It seems you are giving 7w to each led is that the most wattage you could feed to them, why only 7w? Would it be save to get a bigger driver and give them more? If so what would be a good option? Or could I use less leds in series and turn down the amps some to achieve more watts?
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Positivity
Well-Known Member
Here is one reason why it's better to use smaller emitters in smaller areas...spread the light out. One big emitter doesn't work well
iPot
Well-Known Member
That is also true for big areas as well when you are talking about one light .
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lazaah
Well-Known Member
My input wont be as valuable as Flux's, but.... Fork out as much as you can for the heatsink. My passive 9x(3x3) V10s driven by HLG-60-700 (@230ma) 2ft/60cm long 50x50x5mm T-profile in a 2'L x 1.5'D x 2'H space with 90mm (underdriven) exhaust gets hot to touch on the sinks. Heatsinks temps are a min of 12C above ambient, with Tj about 45C above that (can't remember what Tc was). In a 3.5'L x 1.5'D x 5'H heatsink temps were about 7C above ambient.
My bet is you can defo fit that light in your space, and with good air flow it shouldn't get critically hot. But it will come down to the size of you meatsink. At least if you get the adjustable version you can dim when ambient temps get up. Dimming just 10% on mine, the t-profile goes from being hot to warm to touch.
Running all your cobs paralleled sounds line a PITA in terms of running wire