Good idea or bad idea?

[David Marek]

Originally Posted by kevinrs

The heat mats made for the purpose are limited in power. The one for 1 flat, that I got is 17 watts It's supposed to raise temp 10-20 degrees. Using it with a thermostat, you put the probe in the mix, or you could put it under the seedling tray, in the solid tray, if you are worried about the solid tray overheating or something. The thermostat can be set to whatever temperature you want.
If that amount of heat dries out the mix too fast, then you need to change something else.

Wow, those are really good prices. I might be expanding my heated area. Thanks for the link. Heat pads for people cast more than that, which I currently use- 50 watts each- enough to cook most plants- or start seedless watermelons. I use a thermostat, and they cycle quickly enough to reset the two hour auto shutoff.

But that's a digital thermostat and heat pads meant for plants.

Heading over to amazon...