Hey, so ive been expanding my collection, and im trying to run this Hydrofarm Thermostat, with an extension cord plugged into it and plug my two other heat pads up to it ----



But the problem is, the second heat pad wont heat up? It says it can sustain 1000 watts.

I was thinking, would it make a difference if i bought this thermostat:



And try the extension cord method?

Can anyone give me some ideas/help? Thanks.