Discussion in 'General Reptile Discussion' started by alex.snaith, Mar 16, 2017.
I think they are suposedly uvb + heat... As in an all in one globe.
actually heat, bright sunlike yellowish light, very good UVA and UVB levels given off , supposed only bettered by natural midday sunlight. So all in one light source , only negatives are
--- internal circuitry means they must cool off before being restarted
--- can't use a thermostat to moderate the heat output from them
--- a lot tend to be not so durable
--- a lot tend to have very short lifespans
--- light UVA and UVB tends to focused on narrow beam
--- can be quite pricey per unit
I really want to use them with a thermostat ahaha, can risk my little guys getting too hot
.... the MVB will shut off and simply wont turn back on if you trying to control it with a thermostat, so more than the little guys will get no light, no UVA , no UVB and not enough heat to digest their food and will probably think it's winter and go into brumation.
Why can't you use a thermostat? Lol I was going to suggest a dimmining thermostat to solve the longetivity point (which is a fair point). Yeh they are expensive as I said but they are more of an all in one than mercury vapor bulbs, so if I was looking for an all in one, I'd more inclined to go with the sunray. Most MVB's are either only good for heat or only good for uvb, not both. I think they also have the longetivity problem.... You could probably extened the life with dimmining thermostat.
They cant be used with dimming.....they use a self ballasting chamber inside which means they cant be dimmed...
Sunray or MVB? I thought MVB had a self ballasting chamber? Or do they both?
I thought they both had it? Correct me if I'm wrong
I have no idea lol I just rember the self ballasting and MVB bulbs being connected in some way lol
You can control this by the distance between the bulb and basking site (controls the basking site temp) and generally by ventilation (controls the the ambient temp). You will as with other bulbs have to play around with wattages to meet your basking temp needs but not have too much heat lost in very well ventilated cages.
Sun Ray are metal halides not mvb but have similar restrictions like the mvb. The metal halides normally need an external ballast to work. They have a pricey start up costs but replacements are normally cheaper and running cost cheaper as they are lower wattage bulbs but produce a much better light colour than mvb and produce more heat than the mvb comparsion.
I run all my lizards on metal halides probably for the last 3 yrs or so. Bulb lifespans and UV decay are also much better with metal halides than mvbs.
How much do metal halides usally cost to start up @Bushfire ? Other than sunray (Sunray is really exepensive lol). I've always used a phillips heat globe and a 10.0 uvb (or 5.0 depending on the uvb requierments). Although I've also used ceramic, infrared, and neodymium globes. Only for heat though. MVB's never took my fancy, I've always chased cheap and effective haha