Homemade seedling heat mat

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brenda
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Homemade seedling heat mat

Post by brenda » Mon Dec 29, 2014 7:16 am

Saw this idea on the 'net' when I was searching prices on seedling heat mats.
The going price is around $40.

The idea is to use Christmas rope lites mounted on a piece of plywood, then setting the trays (2) on top. Now these lites are on sale. I got a strand for $4.
Had the plywood, so very inexpensive for me.

We'll see how it works.
I will add pics later.
Experience is that marvelous thing that enables you to recognize a mistake when you make it again. -- F. P. Jones

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peterlin
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Re: Homemade seedling heat mat

Post by peterlin » Mon Dec 29, 2014 10:20 am

I think this would work well if the light rope puts out enough heat. I've seen an orchid grower in NW area doing this. I don't think there is LED light rope yet right? LED would put out less heat so may not be as useful. Again, it depends on your growing environment like how cool is the surrounding temperature. Traditional heat mat keeps the mix up to 10 degree warmer.

If I'm a DIY person, I would opt for heating coil sold at home depot. They are more economical for a larger area. Pat Kingfisher in Canada use heating coil and lay ceramic tiles over the coil. His phal compots do wonderfully in this setup.
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Tkuemmet
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Re: Homemade seedling heat mat

Post by Tkuemmet » Mon Dec 29, 2014 3:16 pm

Hey guys! I just thought of something too. Hardware stores like home depot and lowes and anywhere else sell "roof de-icing cables" that you string along to prevent mountains of ice where you place it. That might be a really nice way to make a larger area for heating!

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raybark
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Re: Homemade seedling heat mat

Post by raybark » Mon Dec 29, 2014 4:16 pm

I suppose that depends upon the gutter deicer - many I've seen have a thermostat that only turns on the heat at sub-40 degrees.

The 17W Hydrofarm ones I sell are under $25, are UL approved, and are waterproof.


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Ray Barkalow, Orchid Iconoclast
Using science & logic to improve orchid growing

brenda
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Re: Homemade seedling heat mat

Post by brenda » Thu Jan 01, 2015 8:47 am

Update pics, no-frills heat mat for 2 trays. The lights, when on, are warm to the touch.
My seedlings are thanking me. Some warmth is better than no warmth at all.

Image

Image

Image
Experience is that marvelous thing that enables you to recognize a mistake when you make it again. -- F. P. Jones

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Re: Homemade seedling heat mat

Post by DeafOrchidLover » Thu Jan 01, 2015 4:08 pm

Brenda, that's marvelous idea! You are so creative...


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peterlin
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Re: Homemade seedling heat mat

Post by peterlin » Fri Jan 02, 2015 2:13 pm

Very healthy looking. Great job.
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