What is the best way for me to keep my two sullys warm outside this winter? I have a ceramic heating element on them right now but it seems like they need more. And tips would help.
How old are they? If they are still young, they shouldn't be left out. If they are adults, then some people uses pig blanket heat and others use portable heaters.
Are they at least 8 inches? I have read before, Tom does not keep them out under 8 inches. I also know he uses one of those oil filled electric radiator looking heaters. It also depends on where you live as for how much heat you will need. Tom is in Cali, he needs it mostly at night. I live in Chicago, when my leopard gets large, I will need it day and night and with very low temps sometimes.
Ya, your in the same kind of weather as Tom and a lot of others. It kinda depends on which kind of heating you want to go with. A couple CHE would probably work, the larger 260 watts would be best, or the other kind I mentioned. They all should work good for you.
There are several heat sources that will work for you, including CHE. Some use oil filled heaters or radiated heat panels or pig blankets. I use a small heater called Hound heater because it was given to me. What ever you choose it is important to have it plugged into a thermostat so that you can control the temps. I also have a digital thermometer so that I can monitor the temps in the night box.
In your area, you need mostly heat at night; background heat, right?
I do like the hound heater. It works in an enclosure up to 32 cubic feet (size is the limiting factor). It mounts easily on the wall and directs the heat down.
The newer ones have built in thermostats that do work well. http://www.houndheater.com/index_hound_heater.php
If you use a pig blanket (heat mat for animals), make sure it only covers 50% or so of the enclosure floor (they need the option to get off of it). I think the Kane pig blankets have built in thermostats now.
You can opt to use a CHE on one side for spot heat. I think the concern about a CHE is creating a 'hot spot' (perhaps too hot in the effort to get the enclosure temps up), so best not to rely on it as the only heat source, but add the background or floor heat.
Mine are too small to be out at night. But I used to know someone in the area that had about a 4x4 area made of wood, and had a ramp. On it had 3 sides, up on the area, they had soil, half burries pots and 2 CHE's hanging above it. It stayed toasty up in the area. Once the sun came out and they could bask, they came down each day and spent the day on the groung, at night they went back to their bed.