no trouble with temp it has central air the vats are 215 gallon and i have six set up there is a 8 inch concrete floor that helps retain temp on the cold nights even though we have had cold nights i have not had to heat at all only cool
been up and running since early may of last year and yes they are polycarb panels i bought from farmtek. all the bugs are pretty much worked out now all i need is time to let those beuties grow