Supplemental winter lights

Mike Rummerfield via pbs
Thu, 03 Mar 2022 11:10:30 PST
Thank you for your helpful observations on supplemental winter lights.

Re: "picture of a happy Eucomis regia" -- BEAUTIFUL photograph!

On Thu, Mar 3, 2022 at 10:55 AM Roy Herold via pbs <> wrote:

> Steve, Ken, Mike, et al,
> A couple of observations here....
> I finally took the plunge last fall and got some LED fixtures for the
> greenhouse. The biggest problem here is actually in fall when the sun
> goes behind the tall trees to the south that don't lose their leaves
> until mid November. These trees are around 20 feet taller than when I
> built the greenhouse, and things have been getting worse and worse.
> I was torn between getting a generic 5000k fixture and one that had more
> light wavelengths in a single fixture. The latter seem to be like some
> of the ones that Ken is using in terms of having multiple types of LEDs,
> a mix of blue, warm white, red and IR. I selected one from Amazon made
> by SHZLUX:
> I was very impressed with what I received. The construction is great,
> lots of cords, switches, adjustable hanging cables, etc. They consume
> 70W per 4' fixture and are insanely bright. I bought a set of 2 for less
> than $25 each, they worked fine, and I got four more. These easily cover
> about 25' of 3' wide benches.
> The aluminum extrusion used for a housing is a great heat sink and
> dissipator. No problem at all with starting after a cold night with
> temps below 40F. SHZLUX also makes regular 5000k fixtures with the same
> design if you'd like to follow the recommendations of Steve and others.
> Regarding the other option of changing fluorescent tubes to LED, I'd
> recommend against it. The price for a pair of LED tubes is comparable to
> a single new fixture like I got, and I don't think the performance is
> nearly as good. I had a terrible experience inside my house with
> replacing fluorescent tubes with LEDs in the kitchen and other rooms. I
> jumpered out the ballast as recommended. I went through bulbs from 3
> different manufacturers, finally sending over 20 back for refunds.
> Problems were mainly noise, a terrible buzz and hum that made them
> unbearable indoors. Others died after a couple of weeks, some flickered,
> lots arrived damaged, and some were just weak. Realize up front that the
> heat dissipation from a tube is much worse than an integrated fixture.
> Finally, take a look at the attached picture of a happy Eucomis regia.
> This was from early January, and it's just starting to come into bloom now.
> --Roy
> NW of Boston
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