Cute Small Dog Collars : Best Deal on Penn-Plax® 4-1/2″ Floating ...
Penn-Plax® 4-1/2″ Floating Thermometer Overviews This 4-1/2″ tall floating thermometer is made of a durable plastic that will effectively read temperatures from 20º to 100º Fahrenheit. I purchased one of these to try with my strip temperature gauges on my 90 gallon saltwater reef system. It also reads slower than strip thermometers (I tested it in an empty quarantine tank by raising the internal water temperature and the outside temperature strip registered the change faster). Size 4-1/2″ long x 1/2″ in diameter. Made specifically for water environments, these thermometers are designed to float freely in your aquarium or can be secured to the side of your aquarium using the included suction cup. The 1/2″ diameter makes the increments easy to see and the bright green indicator lets you read the temperature without straining. I compared it with them side by side to see if one was easier to read than the other. The thermometer doesn’t like to stick to the glass (which I cleaned very carefully to make sure there were no lingering algae deposits) and is easily knocked off by invertebrates and other creatures in your tank. If you don’t like thermometer strips you might as well spend the money on an expensive electronic reader that will also run a few of your tests for you.