So I recently purchased a Solar Meter and used it for my chameleon cage. I have brand new Arcadia 6% (2 months old) uvb lighting that runs diagonally of Shenron's enclosure. I purchased my fixture and bulb from lllreptile. I was super excited to finally get my solar meter and opened it right away to test it out.
I used it against my arcadia lighting, and to my surprise I wasn't getting a reading. I tried multiple times and spent time googling what was wrong with my solar meter. I wasnt getting any readings at all. So I quickly figured my solar meter wasnt working, I have the best lighting, why wasnt it reading properly?? I contacted the seller and reported the issue and was immediately sent another one.
I received the new one and opened it up and went to my uvb lighting and used it once again.... no reading!!!
I quickly started to think "maybe my lighting is bad??" Keep in mind, this is a brand new fixture and brand new bulb from a top of the line company! I pulled the lighting down and checked for plastic.. nothing. I checked every part of the light.. nothing.
I have extra bulbs that I keep for all my reptile enclosures. So I decided to replace the bulb. I tried the solar meter and got my readings!! I pulled out the "defective" solar meter and again... I had my readings!!
This is just a warning of how important these are for your reptiles!! I had a brand new fixture and had no idea I had a defective bulb. I would not have noticed for who knows how long. I am so thankful I made this purchase and prevented a potentially catastrophic event for my chameleon. If I would've went the whole 9-12 months thinking my uvb was working, who knows how much my chameleons health could have deteriorated.
I had this happen with a MEGA RAY, couple months old and I got readings of 2 one inch from bulb. Did just like you. It does make you wonder how often chams are sitting under useless lights