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SandyFantasyman
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Off the shelf retail store screw-in LED and CFL bulb comparisons
- Thread starter blynx
- Start date
Douglas.Curtis
Autistic Diplomat in Training
No. You will reach a point of diminishing returns. Once you exceed maximum light intensity, the flowers start growing smaller and more compact. They weigh less and your yield suffers.
(Edit: A little clarification. If you're using LED lighting which is sufficient for flowering with 30w/sqft, using 50 will be too intense and will lower your yield. Better?)
Dude have you been growing those plants purely on LED bulbs? They look gigantic!! I just started following the thread and slowly getting towards the last pages but haven't read about your grow yet. Just interested in what setup you're running and if you have a thread where I can follow your progress with those lights. I've been curious about the effectiveness of normal household LED bulbs and I'm trying to sort out what's the ideal amount of LED bulbs x plant
They're that cheap for a reason, their efficiency is about the same, or slightly better, than HPS. I've been watching much better results with people using SIL arrays and strip LEDs.
So what you're saying is that 12 LED driverless COB at 53w (636w) ≠ 45 LED SIL at 14w (630w)?
I understand uniformity/intensity would be different with fewer higher-wattage COBs, but does a 53w driverless COB actually put out significantly less light than six 9w SILs (54w)?
Also, can't figure out how to mark posts as helpful?
3snowboards
Active member
COB is this case is for chip.on.board
A type of l.e.d. that has just 2 connection points
You on the other hand are referring to a corn bulb
(shaped like a piece of corn)
Two different things
PCBuds
Well-known member
My plant is doing OK even though I'm doing everything wrong. lol
I removed the dead and yellowing leaves and the buds seem to really like it.
(I turned the lights off for the pictures.)
They're 10 Watt Walmart LED's that cost $1 a piece or less.
I'm screwing in a bunch more bulb sockets when this plant is done.
Lot's of lighting from all sides.
I'm using 270 Watts including 160 for the 4' flouro.
No fans. No air conditioner.
Real cheap.
I removed the dead and yellowing leaves and the buds seem to really like it.
(I turned the lights off for the pictures.)
They're 10 Watt Walmart LED's that cost $1 a piece or less.
I'm screwing in a bunch more bulb sockets when this plant is done.
Lot's of lighting from all sides.
I'm using 270 Watts including 160 for the 4' flouro.
No fans. No air conditioner.
Real cheap.
Thanks for the reply. To clarify, I meant driverless Chip On Board (COB) 110v LEDs. Like these:
[YOUTUBEIF]tKAfRbMJCF0[/YOUTUBEIF]
https://youtu.be/tKAfRbMJCF0
With each 50w chip mated to a CPU cooler heatsink/fan aimed at the top of the tent, I feel like these could eliminate tons of sockets in my tent (either a 5'x10' or 4'x8' tent, so tons of sockets), hardware, wire, excess tent frame weight, additional circulation fans, and possibly heat. The video mentions those are $2 chips via AliExpress. Certainly not a bank breaker if they aren't great. I already have several PC PSUs. Would only need to wire 110v to the chips, extend PSU wiring to the heatsink fans, and get some extra Molex adapters. Honestly sounds more straightforward to me than figuring out how to cram over 100 SIL sockets into a tent with a PVC frame.
I suppose I could get a Lux light meter, one of these chips, and four 14w SILs to do a test? I'd hate to wait 3-6 weeks for an Ali Express delivery, do the test, and then wait 3-6 more if they work well. But at $2/ea I could buy enough for two tents and only be out under $100.
Douglas.Curtis
Autistic Diplomat in Training
So far, in my limited experience, I prefer more light sources over fewer. Better penetration, more evenly spaced coverage, additional side lighting increases, there are a lot of benefits.
I'm not sure how 133 110v e26 sockets & 133 9w SILs in a 5'10' tent with no heatsink fans would be any less of a fire hazard than 24 110v COBs with 24 heatsink fans?
Each plant would have 4 50w COBs in a 40"x30" area. That's a lot of light being spread fairly evenly, imho. Far more so than throwing two 600w HPS in the tent and raising them high enough to cover a 5'x5' area and still having heat issues to deal with. Plus if my math is right, I could do 24 COBs with heatsink fans and an existing PC PSU for around $200.
The logistics of 100+ sockets in a large tent is definitely a hurdle. Don't think anyone has ever done it. And I can't seem to find much about anyone using multiple driverless COBs in a large tent. Everything I've found so far has mostly been micro/space bucket type grows, or extremely expensive manufactured COB panels.
Each plant would have 4 50w COBs in a 40"x30" area. That's a lot of light being spread fairly evenly, imho. Far more so than throwing two 600w HPS in the tent and raising them high enough to cover a 5'x5' area and still having heat issues to deal with. Plus if my math is right, I could do 24 COBs with heatsink fans and an existing PC PSU for around $200.
The logistics of 100+ sockets in a large tent is definitely a hurdle. Don't think anyone has ever done it. And I can't seem to find much about anyone using multiple driverless COBs in a large tent. Everything I've found so far has mostly been micro/space bucket type grows, or extremely expensive manufactured COB panels.
noknees
Member
you're completely missing the point. that's a shitload of gymnastics to even theoretically compare with a meager amount of cash, and a single trip to a big box store.
so many words. here's half of your 5x10. pretty please stop polluting the thread, reddit.
https://www.icmag.com/ic/showthread.php?p=8458677#post8458677
Cigarviper
Member
ok you guys...has anyone had to add heat cause these sil's don't get hot enough for proper temperature diff between on/off?
yes, kind of
i've turned off the vent fan in a grow chamber
which was enough to get temps to a better point
a winter time thing for a grow chamber in a partly heated area
Legalcdn
Well-known member
Winter time i had to add heater.. I bought a inkbird 308.. A portable thermostat..best buy.. I might add a 150 hps for heat in winter.. My space is 5.5ftx3.5ftx7ft.. Canopy is 30 degrees almost 24hr with 14 sil setup.. I run vanity lights with 15w LEDs..i will add more in winter..
