are envirolites 125w any good

kulan hunter · #1 04-05-2008, 01:43 PM

i have a choice of lighting but can only fit one light fitting in my grow tent.
my plants are in the 3rd week of veg stage,
my tent is only (70cmx50cmx80cm) pics below plus a couple of my babys.
which would you use. 125w envirolite blue or mh 150w?

the widowman · #2 04-06-2008, 12:31 PM

150w MH or 250w would be better. and get a HPS bulb for flowering.

swansong · #3 04-06-2008, 01:12 PM

the cfl will work just as well, and will help prevent excessive heat.

SunnyD · #4 04-06-2008, 01:16 PM

actually, I saved wattage and had less heat using my 250 hps. I had cfls before and my room was hot as hell.....

Mr Green Man · #5 04-06-2008, 01:26 PM

Indeed,

The Way I understand it heat has more to do with light efficency, Big MH/HPS bulbs are hot but that is beacuse they are also 400/600/1000 Watts and put out loads of light.

In regards to that 125W CFL I just got one, i'm using it for sprouting seeds and I will keep my mouther in under it later. It is a good light, I really like it, but for actual growing I would go with a HID.

Try and get a switchable balest, that way you can use the same Ballest for MH and HPS, I have a 400w one and it works great.

This addvace may not work for you, but I hope it helps.

PS if you go with CFLs spend the extra and get the 200Watters

swansong · #6 04-06-2008, 01:33 PM

I agree, if you want to choose between a 125w cfl and 150w mh, then i would definately opt for the cfl. If you intend to flower under the same bulb, then its worth considering either a 250 w cfl or a 250 w HPS.

SunnyD · #7 04-06-2008, 01:36 PM

Quote:

Originally Posted by swansong

I agree, if you want to choose between a 125w cfl and 150w mh, then i would definately opt for the cfl. If you intend to flower under the same bulb, then its worth considering either a 250 w cfl or a 250 w HPS.

its not the same.....a 250w cfl only puts out 8700 lumens...my 250 hps puts out 33000.......

swansong · #8 04-06-2008, 01:45 PM

Without starting another thread, its not all about lumens. I agree that the HPS will put out a lot more lumens, but the HPS is only 35% efficient.

It uses nearly 20% of the wattage to create heat.

Also i think 8700 lumens sounds a bit stingy for 250w of cfl

I have a 125 w envirolite CFL that puts out nearly 12,000 lumens and more importantly is 100% par.

SunnyD · #9 04-06-2008, 02:10 PM

Quote:

Originally Posted by swansong

Without starting another thread, its not all about lumens. I agree that the HPS will put out a lot more lumens, but the HPS is only 35% efficient.

It uses nearly 20% of the wattage to create heat.

Also i think 8700 lumens sounds a bit stingy for 250w of cfl

I have a 125 w envirolite CFL that puts out nearly 12,000 lumens and more importantly is 100% par.

haha......its all about lumens. What you care about is light...more specifically, light energy. That's what plants use during photosynthesis/growth. Light is measured in lumens.

HPS is more efficient. A typical 250 watt HPS bulb/unit will produce about 27,000 lumens.

23w CFL = 1600 lumens = 69.6 lumens/watt
30w CFL = 2000 lumens = 66.7 lumens/watt
40w CFL = 2600 lumens = 66.3 lumens/watt

compared to

150w HPS = 14000 lumens = 93.3 lumens/watt
250w HPS = 28000 lumens = 112 lumens/watt
400w HPS = 50000 lumens = 125 lumens/watt
600w HPS = 90000 lumens = 150 lumens/watt

swansong · #10 04-06-2008, 02:24 PM

lol... i did say without starting another thread...

Lumens is a measure of the human eyes perception of brightness.

Plants dont see the same spectrum, so lumens is only half the story.

A great place to learn more about what is important to growers.

Envirolites indoor hydroponic envirolite grow lights, grow cabinets and reflectors.

And what CFL figures are those. ?

I Have a 58 w T5 that puts out 5,800 lumens and thats a standard fluroescent, producing 100 lumens per watt in the correct spectrum.