Cheap pre built bulb for seedlings

[SquirrellyWrath]

Hello, I'm a complete noob when it comes to leds and I need an expert opinion. So I have a cheap led bulb with around 70-75 leds I believe very similar to this one:
https://www.amazon.com/gp/aw/d/B01JLLVJPS/ref=mp_s_a_1_65?ie=UTF8&qid=1484171401&sr=8-65&pi=AC_SX236_SY340_QL65&keywords=led+bulb+grow
Would this be enough for first few weeks of seedling growth or would I be better off with a cfl?

 

[canadian1969]

LED is always going to be more efficient than cfl , and vegging doesn't require nearly the light output that flowering does, so try it. Ideally you want something with more blue light for veg, so you may see some changes in stem and leaf growth. You would never be able to flower under something like that lamp, but should be okay for seedlings/clones for the very start. The red may actually promote rooting.

 

[frica]

That bulb is really underpowered.
Better go to homedepot or a local equivalent and get some regular 100 watt equivalent bulbs.

 

[SquirrellyWrath]

Thanks, the light is only supplemental for a few hours of light after sundown going to add a 100w 6500k bulb. Would a bulb that gives off uva/uvb be helpful? I have an unused bulb from a reptile tank that gives of these.

 

[frica]

Thanks, the light is only supplemental for a few hours of light after sundown going to add a 100w 6500k bulb. Would a bulb that gives of uva/uvb be helpful? I have an unused bulb from a reptile tank that gives of these.

UVA/B is only helpful during flowering in not very big amounts.
Small amounts increase THC production (natural sunblock for the plant), but too much will cause damage.

 

[SquirrellyWrath]

UVA/B is only helpful during flowering in not very big amounts.
Small amounts increase THC production (natural sunblock for the plant), but too much will cause damage.

That's good to know thanks

 

[VegasWinner]

I use a cheap 20w blue/white led panel 14"x14" for $20 on amazon. works great.

 

[brimck325]

u get what u put in.....veg under a 100w cfl and u get very slow growth....veg under 1000w and u get explosive growth.

 

[PetFlora]

Blurple eds for cannabis were debunked 4-5 years ago

Check out Quantum Boards, many riu threads

 

[MeGaKiLlErMaN]

LED is always going to be more efficient than cfl , and vegging doesn't require nearly the light output that flowering does, so try it. Ideally you want something with more blue light for veg, so you may see some changes in stem and leaf growth. You would never be able to flower under something like that lamp, but should be okay for seedlings/clones for the very start. The red may actually promote rooting.

Don't say never @REALSTYLES uses 6500k I beleive... More blue isn't a bad thing

 

[SquirrellyWrath]

Picked up a 100w equivalent uses 14w led bulb 5000k . The box says 1600 lumen however the bulb has 1500 lumen. Either way should be enough for a few seedlings I think.

 

[CobKits]

That bulb is really underpowered.
Better go to homedepot or a local equivalent and get some regular 100 watt equivalent bulbs.

the 15W "100W equivalents" placed one per square foot will raise em up to 12" easily if you pop the covers off. i mix up 2700 and 5000k

 

[CobKits]

Blurple eds for cannabis were debunked 4-5 years ago

yet there are plenty of people raising excellent crops to full maturity with them to this day

 

[green217]

yet there are plenty of people raising excellent crops to full maturity with them to this day

depends on your definition of an excellent crop. I wondered about the led bulbs, u saying we can just remove the plastic cover. Didn't know I could do that. But it makes perfect sense. 15w just isn't much. But for a clone or germination tray could be a efficient change from my 100w t5.

 

[CobKits]

depends on your definition of an excellent crop.

as good as any other light out there

https://www.rollitup.org/t/3-clw-solarsystem-550-and-4-timber-cxb-3590-diy-kits.919164/

 

[frica]

depends on your definition of an excellent crop. I wondered about the led bulbs, u saying we can just remove the plastic cover. Didn't know I could do that. But it makes perfect sense. 15w just isn't much. But for a clone or germination tray could be a efficient change from my 100w t5.

That's why you use multiple bulbs.

Good deals are less than or around half a dollar per watt.

I've bought some Osram Parathoms 20W for my (still germinating) peppers, 2452 lumen if Osram isn't talking shit.
Bright as fuck, eye damaging bright when I took the cover off.
122lm/w (including driver losses)
It was only around half an euro per watt.

 

[frica]

Only real problem with blurple is that it can be hard to identify if your plant is having problems so you need some other light with a better cri.
Or those stupid glasses.

 

[CobKits]

agreed. those 550s are good like that as you can turn on the white band only

 

[PetFlora]

yet there are plenty of people raising excellent crops to full maturity with them to this day

They certainly can look that way. It would be great a clone side by side, then lab test the buds

Plants will adapt in order to survive. Beyond the first generation, mutation is highly likely. What that might do is something to consider. And then there's the issue of what harm it does to ones eyes over time

 

[giggywatts]

i have 4 14w phillips 5000k 100w equal in my mom box and they love them. got them from home depot and they still have the covers.
5000k
http://www.homedepot.com/p/Philips-100W-Equivalent-Daylight-LED-Light-Bulb-2-Pack-462002/206923041
2700k
http://www.homedepot.com/p/Philips-100W-Equivalent-Soft-White-A19-LED-Light-Bulb-2-Pack-461961/206923033