When I build a rack im going to use flexwatt with a helix dbs1000 to heat the rack. What I wanted to know is do I have to use one piece of flexwatt for the whole rack or can the helix have multiple pieces of flexwatt hookup to the one helix?The rack is going to house 4-6 adults (i havent made up my mind)and later i will build a juvinile rack.