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 Post subject: Homemade seedling heat mat
PostPosted: Mon Dec 29, 2014 7:16 am 
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Joined: Sat Feb 18, 2012 8:18 am
Posts: 566
Location: NC
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.

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 Post subject: Re: Homemade seedling heat mat
PostPosted: Mon Dec 29, 2014 10:20 am 
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Joined: Fri Oct 24, 2003 1:57 pm
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Location: Texas, USA
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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 Post subject: Re: Homemade seedling heat mat
PostPosted: Mon Dec 29, 2014 3:16 pm 
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Joined: Thu Apr 18, 2013 1:25 pm
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Location: Milwaukee, WI, USA
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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 Post subject: Re: Homemade seedling heat mat
PostPosted: Mon Dec 29, 2014 4:16 pm 
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Joined: Fri Sep 17, 2010 7:52 am
Posts: 313
Location: Oak Island, NC
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.


Ray Barkalow
firstrays.com

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 Post subject: Re: Homemade seedling heat mat
PostPosted: Thu Jan 01, 2015 8:47 am 
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Joined: Sat Feb 18, 2012 8:18 am
Posts: 566
Location: NC
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

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 Post subject: Re: Homemade seedling heat mat
PostPosted: Thu Jan 01, 2015 4:08 pm 
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Joined: Tue Sep 02, 2014 7:15 pm
Posts: 65
Brenda, that's marvelous idea! You are so creative...


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 Post subject: Re: Homemade seedling heat mat
PostPosted: Fri Jan 02, 2015 2:13 pm 
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Joined: Fri Oct 24, 2003 1:57 pm
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Very healthy looking. Great job.

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