Hey Ken, There were very good comments today about supplemental lighting and it would be great to have a place where it would be easy to find them in the future. One can always search the List, but a location like the wiki or similar would be ideal - IMO. There were also many good exchanges some time ago about greenhouse features that would be good to have in an easily accessible location as well. Again, IMO. Bern -----Original Message----- From: pbs [mailto:pbs-bounces@lists.pacificbulbsociety.net] On Behalf Of Kenneth Preteroti via pbs Sent: Thursday, February 24, 2022 5:17 PM To: Pacific Bulb Society <pbs@lists.pacificbulbsociety.net> Cc: Kenneth Preteroti <k.preteroti@verizon.net> Subject: Re: [pbs] Supplemental winter lights I would like to thank everyone who responded. Would Supplemental Lighting be worthy of placement in the wiki? I summarize what I am doing and plan to do in the future. I am using LED lights. The system covers a 4’x5’ area with 6 arms. I separated the arms and light a 2’x9’ area. The lights draw 2.7 amps, 325 watts. Supposedly equivalent to a 1000 watt metal halide light. I believe LED’s put out twice the light per watt as a T5HO fluorescent. I plan to have the lights on from dawn to dusk, 10-12 hours a day from the beginning of October till the end of March. LED’s put out little heat and I doubt they create a problem. Metal halide(MH) and high pressure sodium(HPS) lights are hot and can burn plants. The current issue with my greenhouse temperatures as it relates to winter growers is it easily get to 80 degrees. Passive ventilation helps as does opening a door. Ken P New Jersey, USA Zone 7a The past was erased, the erasure was forgotten, the lie became truth. George Orwell, 1984 _______________________________________________ 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>