Snakes are commonly heated via heat mat as they are on the ground anyway, unless you have arboreal snakes. Most species do not need uvb, but if you want to supply it, stick to a 2% bulb or house above a mesh screen (like an exoterra) if going above 2% is my recommendation.
Dragons are different. 10% uvb is mandatory, do not use reptiglo either, their bulbs often cause problems. This is just a light supply. You also need to supply a "basking spot" where the temperature is closer to 40º. As the dragon is drawn to light naturally, seeking to get the highest spot near to it, using a ceramic bulb is often counter intuitive: its dark heat and the dragon may sit elsewhere closest to the brightest spot. For this reason, most of us dragon keepers use a spotlight bulb: the dragon is drawn very close to the bulb due to the light. I have found 42W halogen bulbs do the trick for the right temp. In nature, a desert drops in temp at night, so its natural to do this for a reptile too. Right now, its a piece of wee wee as its 25/26 degrees permanently anywhere in my home, so everything goes off. In winter, we heat the room to 21/22 at all times and we use lower wattage night lights (red or blue bulb), heat mats & ceramic bulbs for some of our more specialised guys.
Tell you, the electricity used for a fish tank is nothing compared to a hot room!
Dragons are different. 10% uvb is mandatory, do not use reptiglo either, their bulbs often cause problems. This is just a light supply. You also need to supply a "basking spot" where the temperature is closer to 40º. As the dragon is drawn to light naturally, seeking to get the highest spot near to it, using a ceramic bulb is often counter intuitive: its dark heat and the dragon may sit elsewhere closest to the brightest spot. For this reason, most of us dragon keepers use a spotlight bulb: the dragon is drawn very close to the bulb due to the light. I have found 42W halogen bulbs do the trick for the right temp. In nature, a desert drops in temp at night, so its natural to do this for a reptile too. Right now, its a piece of wee wee as its 25/26 degrees permanently anywhere in my home, so everything goes off. In winter, we heat the room to 21/22 at all times and we use lower wattage night lights (red or blue bulb), heat mats & ceramic bulbs for some of our more specialised guys.
Tell you, the electricity used for a fish tank is nothing compared to a hot room!