Chiller/Heater at Work

how is this chiller working ? does it pull down alot

the chiller/heater works great! the unit keeps the temp range very tight so there's not a lot of degrees it needs to pull it down (day) or push it up (night). i'm very pleased with the unit so far.

there's some concerns but it really isn't the unit's issue but the setup (detailed on my tank thread in the Pico sub-forum).