comparisons of heat mat costs and performance
I'm building an outdoor propagation box with insulation. I will be rooting cuttings and starting plants from seeds. My coldest overnight temperature in the winter is typically 33 F (1 C), but more typically 40 F (5 C). My goal is to keep the rooting pots in the mid 70's (23 C) in the day and early evening and above 55 F (13 C) at night. I will use heat mats to warm the 45 sq.ft. surface and a thermostat to regulate the mats.
Here are the mats I'm considering:
Hydrofarm 48" x 20" @ 107 Watts, $55 each --> 16 W/sq.ft. and $8 / sq.ft.
Pro-Grow 22" x 60" @ 200 Watts, $155 each --> 22 W/sq.ft. and $17 / sq.ft.
Stanfield 3' x 6' @ 400 Watts, $376 each --> 22 W/sq.ft. and $21 / sq.ft.
Do you have experiences with these or alternative systems I could consider?
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