I have a solar meter 6.2 and i need help with understanding the readings. Im getting a veiled chameleon and I will be using a reptisun 5.0. I need to know what the numbers should be for a strong bulb and what the numbers are when i should replace the bulb? Does anyone else use these meters to read off the UVB emitting from these bulbs? What numbers indicate a strong bulb and what is the lowest number it can reach before replacing? Please help!