So I had a 40 gallon breeder laying around that was used for a snake. After bleaching it and cleaning it out really good I decided I would set it up for a dragon. I don't want to build another cage just yet and decided what the heck. Right.....
Well the lighting that I have to use to get the temps up is insane. I have a 100 watt T-rex MVB and Another 100 watt halogen spot. I also got a piece of plexiglass to cover the cooler side to help keep some of the heat in. With that wattage my temp gauge, a digital probe, is still only getting to 102. Which is a good range but, for that wattage. Geez!
For reference the cages that I made use a 60 watt EB kit from Reptile UV and a 40 watt household bulb, 4x2x1.5, and I get temps of 105 on the basking spot.
So I am curious what type of wattage people use to get there enclosures up to par in a 40 gallon breeder.
I have one of those and I don't have any issues at all. Although I do have it set up with a raised basking area so my temps get a bit warm and I have to monitor it closely.
And are you taking the measurement from the log? Mine is an actual 12x12 platform I built and normally it gets about 115 on the platform so I move the light so it's not directly over it to bring the temperature down some.
I just posted about the same problem. Although, I am not using an MVB. Just the reptisun 10.0. I have a 90 watt halogen flood light about 12-13 inches from the basking rock. The brand is "GE outdoor halogen 90" It got my temps up to 112. I got it from rite aid.
I have a 40 breeder, with a basking spot that is a large brick- like 8 x 6 x 4" high. Above that, in a clamp lamp, with the lamp rim about 0.5-1.0" above the rim of the viv, is a 100 watt full-spectrum spot. That makes the temp of the brick about 105F. The ambient temp of the viv decreases away from the spot light going through the mid-80's in the center to whatever the house room temp is under the hide at the opposite end of the viv from the basking spot. The UVB lighting is two Reptisun 10's. I'll use a ceramic heater at the basking site in the winter, when the basking light is off. (Just to keep the temp at 75 or so). I don't have any problems maintaining temps with an open viv.