Im planning on buying racks this year and some balls also a spider & albino. My question is how does helix keep all my tubs with the same heat? does it only have 1 probe? does it turn off & on? i have a zilla thermostat at the moment and tried plugging my 2 UTHs under the same thermostat but didnt work for me...the tank with the probe had the right temp but the other 1 was way off so i went & bought another same thermostat the next day for $50... i was wondering if helix works the same way? i've heard of a thermostat that has its own individual probe for each tub which keeps all the tubs in the right temp always...has any body heard of it or have it? if so where can i find it?