Off the shelf retail store screw-in LED and CFL bulb comparisons

[Samuel Caldwell]

Looks great, MdNewgrower! Nice job! It's a great feeling to grow such wonderful plants, eh?

 

[LedLara]

Wow Mdnew! impressive.. What size is your box?

 

[MdNewgrower]

Yes, Sam, it's very cool to do this.

Using this for the tub/box:
HDX 55 Gal. Storage Tote in Black HDX55GONLINE(4) at The Home Depot - Mobile
http://m.homedepot.com/p/HDX-55-Gal-...NE-4/205597365

14" +/-(at most narrow, actual bottom) x 17.5" +/- (at most shallow portion of depth) x 32" +/- (artificial flat bottom, to touching bottom of lowest center hanging light. 1.75ish sq feet.

Box is hanging from the wall, bottom to the wall.

 

[LedLara]

Isn't this an incredibly high lightpressure per square ft? I'm at 77watts on 2.5 sqft and the plants are loving it..

 

[jonhova]

Isn't this an incredibly high lightpressure per square ft? I'm at 77watts on 2.5 sqft and the plants are loving it..

108 watts for one plant is not excessive in the least.

 

[MdNewgrower]

Isn't this an incredibly high lightpressure per square ft? I'm at 77watts on 2.5 sqft and the plants are loving it..

108 watts for one plant is not excessive in the least.

I think I'm at 61.7ish watts per square foot with 2 plants. From what I've seen/read, this is a middle of the road wattage measurement.

Plants seem happy

 

[cheifyc]

any one using these lights for vegging? And also are they to strong to start seeds under? And if they are when is it ok to put the seedlings under them and at what distance? Thanks

 

[LedLara]

Put them right under from day 0, at 10 inches or so. My newly sprouted seedlings never showed signs of disliking strong HPS or LED light.

 

[cheifyc]

Put them right under from day 0, at 10 inches or so. My newly sprouted seedlings never showed signs of disliking strong HPS or LED light.

Thanks

 

[MdNewgrower]

any one using these lights for vegging? And also are they to strong to start seeds under? And if they are when is it ok to put the seedlings under them and at what distance? Thanks

Mine were vegged under a mix of 5000k and 2700k.

 

[frica]

I feel like over 50 watt per square foot is excessive for LED.

 

[cheifyc]

Mine were vegged under a mix of 5000k and 2700k.

Did you start the seeds with them and if so at what distance? because right now I have 2 seedlings under them 1 is ok but one seems like it doesn't like it. I currently have 7 of the 5000k 8 watters for a total of 56 watts and the seedlings are over a foot away. Any suggestions. And also they are in pure coco and only getting PHed ro water at the moment. Here are some pics. Any advice would be much appreciated.

 

[LedLara]

The little one seems a bit weak or over watered maybe? How often did you water them so far?

 

[Gardenic]

Hello there!

At first - blynx, really great job! congrats

second one, I have a quick question.
This time o want to try LED grow, usually I use my hps 150W.

I (almost) build box 28cm x 36cm (0.093 square meters)

Put there 8x LED 10w 3000k 806lm 150°
The question is whether can I use this bulbs for the entire grow? Veg/Flo.

I heard different versions about it in my country.
I must admit, I would rather want have a bulb, whom I will not have to to exchange.

Greeting and best regards.

 

[BruceBanner]

Did you start the seeds with them and if so at what distance? because right now I have 2 seedlings under them 1 is ok but one seems like it doesn't like it. I currently have 7 of the 5000k 8 watters for a total of 56 watts and the seedlings are over a foot away. Any suggestions. And also they are in pure coco and only getting PHed ro water at the moment. Here are some pics. Any advice would be much appreciated.

Light is too high I think, it seems to me that it's much more than over a foot distance, it would be better to let just 5 bulbs do they work in this early stage and put them at about 30-40cm, gradually decrease distance and increase light. What's your humidity? In early stage the plants need more humidity, and those 3 fans if all are working is overkill for this stage, because they make the closet dry if your room humidity is low

@Gardenic
Off course you can use them bulbs the whole grow

 

[Gardenic]

@BruceBanner

Thanks for Your response.
Im case when i use only 3000k, should i expect the big difference in the final result? With hps everything is easy, just on/off and let them grow;p

 

[cheifyc]

The little one seems a bit weak or over watered maybe? How often did you water them so far?

I only gave them water twice so far. So I don't think its that.

 

[cheifyc]

Light is too high I think, it seems to me that it's much more than over a foot distance, it would be better to let just 5 bulbs do they work in this early stage and put them at about 30-40cm, gradually decrease distance and increase light. What's your humidity? In early stage the plants need more humidity, and those 3 fans if all are working is overkill for this stage, because they make the closet dry if your room humidity is low

@Gardenic
Off course you can use them bulbs the whole grow

Thanks I will give that a try.

 

[BruceBanner]

Thanks I will give that a try.

Check the humidity, and anyway put in towels in some water filled plastic containers or even a humidifier

@Gardenic
Difference should be small if any, and it's also easy as HPS, even easier because of less heat

 

[Gardenic]

Great news then.

now, I just gotta wait wait for a plant