Supplemental winter lights

The fixtures produce very little heat as far as I can tell. My greenhouse is heated with a radiant floor set to come on at 42F. The source of the hot water is a small furnace that also makes hot water for domestic use.
There’s a ridge vent that closes at 50F. I felt that the heat should not open the vent. I set a buffer between the two actions. On cold sunny days the ridge vent moderates the temperature at around 46-48F without heat coming on.
Arnold

Sent from the all new AOL app for iOS

On Thursday, February 24, 2022, 3:31 PM, XYZ2 in Virginia <867ykcor@cox.net> wrote:

Thanks Arnold,

Do your light fixtures put out much heat with the LED bulbs? Do you ever use supplemental heat mats during the winter? Or, I presume your greenhouse is heated for when the days are overcast.

Thanks again, this is great info for me. I appreciate it.

Regards,

Bern

-----Original Message-----
From: pbs [mailto:pbs-bounces@lists.pacificbulbsociety.net] On Behalf Of Arnold Trachtenberg via pbs
Sent: Thursday, February 24, 2022 2:35 PM
To: pbs@lists.pacificbulbsociety.net
Cc: Arnold Trachtenberg <arnold140@verizon.net>
Subject: Re: [pbs] Supplemental winter lights

Bern
Yes it's two 4 ft fixtures end to end.
The bench is 12 feet long.

Each has 4 LED tubes. Timer set to go one at 8 AM and off at 5 PM.
Fixture is about 20 inches above the bench.
I haven't used a light meter.

The fixture is a Sun System Sun Blaze T5 HO 44.
Rated at 4600 lumens.

Arnold

-----Original Message-----
From: XYZ2 in Virginia via pbs <pbs@lists.pacificbulbsociety.net>
To: 'Pacific Bulb Society' <pbs@lists.pacificbulbsociety.net>
Cc: XYZ2 in Virginia <867ykcor@cox.net>; 'Arnold Trachtenberg' <arnold140@verizon.net>
Sent: Thu, Feb 24, 2022 2:23 pm
Subject: Re: [pbs] Supplemental winter lights

Hi Arnold,

Are you using the Agromax T5 light bulb that is 4 feet long? How many of them to you have in your fixture? And how many total? Finally, how high do you have them above your plants? Do you use a light meter to help you adjust the height for brightness, lumens?

Thanks,

Bern in Williamsburg

-----Original Message-----
From: pbs [mailto:pbs-bounces@lists.pacificbulbsociety.net] On Behalf Of Arnold Trachtenberg via pbs
Sent: Thursday, February 24, 2022 12:02 PM
To: pbs@lists.pacificbulbsociety.net
Cc: Arnold Trachtenberg <arnold140@verizon.net>
Subject: Re: [pbs] Supplemental winter lights

Sorry
41 watts at 6400 K
411 is the old telephone number here for directory info.

Arnold

-----Original Message-----
From: Arnold Trachtenberg via pbs <pbs@lists.pacificbulbsociety.net>
To: pbs@lists.pacificbulbsociety.net <pbs@lists.pacificbulbsociety.net>
Cc: Arnold Trachtenberg <arnold140@verizon.net>
Sent: Thu, Feb 24, 2022 11:59 am
Subject: Re: [pbs] Supplemental winter lights

Martin:
I'm using AgroMax T5 LED.
411 watts at 6400K.
On whenever the sun is up.
Rimmer suggested not letting them run into night time and I think it has helped.
Plants need a dark period.
Arnold

-----Original Message-----
From: Garak via pbs <pbs@lists.pacificbulbsociety.net>
To: Arnold Trachtenberg via pbs <pbs@lists.pacificbulbsociety.net>
Cc: Garak <garak@code-garak.de>
Sent: Thu, Feb 24, 2022 11:48 am
Subject: Re: [pbs] Supplemental winter lights

Hi,

I've also prolonged my lighting hours from year to year and at least think I get better and better results here at 48° - one question
though: What type of light are you using? LEDs or something more on the heating side?

--
Martin (pronoun: he)
----------------------------------------------
Southern Germany
Likely zone 7a

_______________________________________________
pbs mailing list
pbs@lists.pacificbulbsociety.net
http://lists.pacificbulbsociety.net/cgi-bin/…
Unsubscribe: <mailto:pbs-unsubscribe@lists.pacificbulbsociety.net>
_______________________________________________
pbs mailing list
pbs@lists.pacificbulbsociety.net
http://lists.pacificbulbsociety.net/cgi-bin/…
Unsubscribe: <mailto:pbs-unsubscribe@lists.pacificbulbsociety.net>
_______________________________________________
pbs mailing list
pbs@lists.pacificbulbsociety.net
http://lists.pacificbulbsociety.net/cgi-bin/…
Unsubscribe: <mailto:pbs-unsubscribe@lists.pacificbulbsociety.net>