I use UTH for stand-alone tubs and have flexwatt for my rack.
Those UTH are just different brands. Ultratherm stays the lowest temp (around 110~120) even without a thermostat and warms up the slowest, compared to zoomed and exoterra, so ultratherms are the safest. Obviously still requires a thermostat, but just not spiking hot like the other two.
Reply With Quote