With three enclosures personally I'd look into a herpstat pro (4 probes) or an ecozone (4 probes and tons of bells and whistles and more cash.) It isn't the cheapest thing out there but it is worry free set it to what you want it to be place the probes and it does the rest no thought no bother and it squeeks if there is a problem. I have 3 pros, one II and an ND and I think they are worth every cent. My opinion I am sure that others will say Johnson and or Ranco but the idea of a devise that is designed to do the job I want it to, I sleep better at night. I seem to have deeper pockets than some or less toys not sure which.![]()