Youch! Those Pro-Grow mats are a bit beyond my budget! But, then I'm just a dabbler.
For the record, tho, I've been quite pleased with my HydroFarm mats. I can't remember how long ago I bought them, but I know I've had my little greenhouse for about 9 years and all my mats still work just fine. I have them plugged into power strips with on/off switches.
