Yes 2 2000w elements together will be 4000w. That controller will not work for that application. Also if you are planning on just plugging in to a 120v outlet in your house to power the 2 elements you will be overloading that circuit. 4000 watts at 120v will draw around 33 amps.
I picked up my subscription through a link from integra93ls, his should be free now and I am hoping I can do the same. All I need is 3 to buy through this link, I will post if I get 3 that way someone elses link will get used. Thanks...
Thanks halifaxhops! Received my rhizomes and they look GREAT!!!, all are nice and big. Shipped very quickly and packed well. Great communication also , thanks again halifaxhops.