I have built my grow room in an un insulated shop, so I have dirt floors that I just put black plastic visqueen down on. Its insulated and sheet rocked, but I have temps at the ground level in the 60's and up from that its 78-80, should I try and insulate the floor a little? I have two small heaters in their with my 1 1k watt light and no fan or exhaust yet, are the temps going to be okay to start my clones in? any help is appreciated.