Lighting 6500 k cfls
- Thread starter mikebig
- Start date
Nelson
R.I.P. Gone, but not forgotten.
I use 45 watt bulbs that screw into a regular Edison base. They produce 9,000 lumens. they are at a color temp of 4,100K. They are gauranteed for 9 years by the company Globe. In about 30 of them I have purchased only 1 failed and the company replaced it wiith free UPS postage to my door. I have great results in my light rack growing with them. I use 24 of them in 3 rows over my tank.
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Egzoset
Guest
This would tend to confirm that having the same colour doesn't mean the spectral peeks are laid out similarily.
If i consider 2700 °K to be the maximum lower limit and 6500 °K to be the minimum upper limit then this takes us around 4600 °K right in between, which is close to 4100 °K...
The fact that you're able to testify that these CFL lamps actually work nicely with your culture seems to imply that it would be most interesting to see a graphic representation of the corresponding spectral light distribution, IMHO.
It is clear that it would differ greatly from what i might have expected initially. Personnally, when i read "4100 °K" i begin to imagine "greenish yellow"!
...
It happens i've been thinking about building some sort of furniture intended to receive the micro-wave oven on its surface (on the top), while below there would be a pair of doors. Inside, e.g. behind those doors, an accessory on wheels would support 4 or 6 plants. I thought 16 4' 32W/40W fluorescent tubes should suffice. Maybe not. In fact, i might want to double this amount and make it more like 32! Meaning i'd need to install 8 ballasts, each one being capable of supplying power to 4 tubes.
My guess is i'd have to place 8 tubes in the center and the rest (24) on the inside walls including the doors.
I'm not sure i've seen many "closets" with vertical fluorescent tubes though. But i'll keep looking.
If i consider 2700 °K to be the maximum lower limit and 6500 °K to be the minimum upper limit then this takes us around 4600 °K right in between, which is close to 4100 °K...
The fact that you're able to testify that these CFL lamps actually work nicely with your culture seems to imply that it would be most interesting to see a graphic representation of the corresponding spectral light distribution, IMHO.
It is clear that it would differ greatly from what i might have expected initially. Personnally, when i read "4100 °K" i begin to imagine "greenish yellow"!
...
It happens i've been thinking about building some sort of furniture intended to receive the micro-wave oven on its surface (on the top), while below there would be a pair of doors. Inside, e.g. behind those doors, an accessory on wheels would support 4 or 6 plants. I thought 16 4' 32W/40W fluorescent tubes should suffice. Maybe not. In fact, i might want to double this amount and make it more like 32! Meaning i'd need to install 8 ballasts, each one being capable of supplying power to 4 tubes.
My guess is i'd have to place 8 tubes in the center and the rest (24) on the inside walls including the doors.
I'm not sure i've seen many "closets" with vertical fluorescent tubes though. But i'll keep looking.
Nelson
R.I.P. Gone, but not forgotten.
The light is very white off of them In fact the bulb describes itself as being cool white no tint of yellow or green. It is the 2700K bulbs that have the yellowish tinge to them.
This would tend to confirm that having the same colour doesn't mean the spectral peeks are laid out similarily.
If i consider 2700 °K to be the maximum lower limit and 6500 °K to be the minimum upper limit then this takes us around 4600 °K right in between, which is close to 4100 °K...
The fact that you're able to testify that these CFL lamps actually work nicely with your culture seems to imply that it would be most interesting to see a graphic representation of the corresponding spectral light distribution, IMHO.
It is clear that it would differ greatly from what i might have expected initially. Personnally, when i read "4100 °K" i begin to imagine "greenish yellow"!
...
It happens i've been thinking about building some sort of furniture intended to receive the micro-wave oven on its surface (on the top), while below there would be a pair of doors. Inside, e.g. behind those doors, an accessory on wheels would support 4 or 6 plants. I thought 16 4' 32W/40W fluorescent tubes should suffice. Maybe not. In fact, i might want to double this amount and make it more like 32! Meaning i'd need to install 8 ballasts, each one being capable of supplying power to 4 tubes.
My guess is i'd have to place 8 tubes in the center and the rest (24) on the inside walls including the doors.
I'm not sure i've seen many "closets" with vertical fluorescent tubes though. But i'll keep looking.
would 5000k work better for veg ,Ive found some 23 w 5000 k locally
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Egzoset
Guest
So, if it's not as bad as i imagined then perhaps i should forget about my imagination altogether and simply pick a GE 00483 42 Watts 2700 °K "Soft White" CFL (17.49 $ CAD) to try it!
But i still wish i could find something in the same power range but with a number above 6400 °K marked on the package.
Like an obsession i can't get rid of...
But i still wish i could find something in the same power range but with a number above 6400 °K marked on the package.
Like an obsession i can't get rid of...
Nelson
R.I.P. Gone, but not forgotten.
I know the bulb you are talking about it is the one that Canadian Tire sells. It is very yellow and I don't like it as much. If Shawinigan has a Walmart they sell the 4,100 K Globe a much better bulb and a better colour. They are 14.95. Worth the drive to Trois Riviers if they don't.
So, if it's not as bad as i imagined then perhaps i should forget about my imagination altogether and simply pick a GE 00483 42 Watts 2700 °K "Soft White" CFL (17.49 $ CAD) to try it!
But i still wish i could find something in the same power range but with a number above 6400 °K marked on the package.
Like an obsession i can't get rid of...
E
Egzoset
Guest
Salutations Nelson,
Lucky me, there's a Walmart store nearby. No need to leave Shawinigan Falls, even less to travel to Trois-Rivieres (i'd find simpler just to go shoping to Montreal anyway). So, i hope this will do for a while:
...'cause i've brought back 3 of them.
The boxes are marked "Globe EnerSaver 200W Cool White", all 3 appear to be identical but for one detail: 2 bulbs are 3000 lumens units while the 3rd one is 2250 lumens only...The lamps are now mounted on a tripod support, a few inches above my 4 plants with one lamp for the younger duo; the other got 1 lamp right on top of each plant because of their larger sizes. All plants are covered with a clear plastic container with openings to allow breathing and limit evaporation also. In addition, i figure this should tame down UV radiation slightly, if any...
Thanks for the advice! :thumbs:
Lucky me, there's a Walmart store nearby. No need to leave Shawinigan Falls, even less to travel to Trois-Rivieres (i'd find simpler just to go shoping to Montreal anyway). So, i hope this will do for a while:
...'cause i've brought back 3 of them.
The boxes are marked "Globe EnerSaver 200W Cool White", all 3 appear to be identical but for one detail: 2 bulbs are 3000 lumens units while the 3rd one is 2250 lumens only...
I knew they were waiting out there to catch me. Congratulations Walmart!!! Well, i guess at least i saved a few cents since i paid 14.47 $ CAD each.
Thanks for the advice! :thumbs:
M
mazarxnl
Guest
You could order them online too. 1000bulbs has em in.....well i dunno i got the 105 watt though
