We have suggested in your other threads about getting either an infrared temp gun or a digital thermometer with a long wire and probe end. Have you found one yet? A 150 watt bulb is a LOT for a 55 gallon tank and the strip and round gauge thermometers you have now are only measuring the temp of the glass. What you need to know is the SURFACE temp and your thermometers could be off as much as 20 degrees. A picture of the Acurite digital with probe was posted in one of your other threads, do you have a Walmart near you where you can get one? You shouldn't even consider a MVB until you get a decent thermometer.
Are you ordering a Repti-Sun 10.0 strip fluorescent? What is the brand of UVB you have now, if you look on the side of the bulb, the brand and % of output will be written on it, if it is indeed a
UVB bulb.
Moved here from Health forum