Hi strath, i dont have any extra suplamental heating on my growing chambers in the winter, i just make sure that almost all of the top of it is coverd with suranwrap, i leave 2 small gaps one at each end for air curculation and once a day tending to all the plants i leave a portion open for half hr to get fresh air, the growing chambers lights above create enough heat for me to keep even dews that require high temps, i have been able to create a gradiant so that one end is always hotter than the other. The heat from the lights is always in check, i have foil above the bulbs in the shop lights to refflect as much light downward, the suranwrap stops alot of heat from the lights from comming in contact with the plants so as not to fry them, i have had tons luck doing it this way for many yrs now without any probs of over heating or burn to the plants. I will take some pics of my biggest grow chamber its a 50 gal odd shaped tall and long Tru Vu acrylic tank. So its kinda cloudy scratched up so you will have to bare with me on the pics when i take um they look real cloudy.
Anyways the grow chambers are in a spare small bedroom of mine that i had converted into my office so its stays real warm in here in the winter time, due to how many house plants i have and the constant watering of them in the winter the humidity in my house is always reading between 78% to 85%. I thought for sure they were goners due to the fact they were FROZEN and i mean Frozen when they came in and looked dead, so i dont know how they managed to survive other than super fast quick dormancy they went into in such a short amount of time durring shipping maybe? They have been growing like gangbusters for the past 6 months now and they dont seem to be slowing down at all.
Hi shawnintland, thank you very much.

The CP media i use is a mix of my own i make its 60% spag peat, then 20% perlite, 10% sand and 10% shredded/choped dry LFS all mixed together, the last time i repoted these dewy kids i had moist LFS on the bottom of there pots then the mix on top of that, they did just fine with that but i wanted more drainage this time so i used perlite on the bottom of the pots this time and then the mix on that. They are tempramental thats for sure they dont like being SOGGY/WATER LOGGED at all but do like being super moist, i noticed the bigger one had way longer roots and the smaller one has a ball of roots. They both sit in the same amount of distilled water, ive noticed when the tiny amount of water they sit in gets almost gone then they have this huge growth spurt. I have tried leaf/stem cuttings/pullings on dry moistend LFS and to no avail, and i also tried the same thing on the media mix i use and to no avail, im gona go with live spag next and keep the pot coverd this time under some diffrent lighting and see how that goes. My next op is cross pollinating the flowers, but sneaky little dews

bloom while im not watching or in bed sleeping at night, THAT WONT HAPPEN AGAIN.. Next time they flower i will be watching even if i am up for days...

I could wait till winter and try to do a division on them.. Ya never know maybe the freezing had some play here in the part of making them grow so well or its just the way i have them set up and the media i use.
I have some D. falconeri comming in soon and im gona grow them the same way im growing these dews if they do well i guess im doing something right.. LOL!!!