- Sku: 11205
- Vendor: Marina
Marina Plastic Thermometer w/Suction Cup
The Marina Plastic Thermometer keeps an easy eye on your water temperature with a clear, at-a-glance scale and a suction cup that sticks to the inside of the aquarium glass. A color-coded safety zone shows whether your water sits in the comfortable range for tropical fish, and the durable plastic body is safe for both freshwater and saltwater tanks. Pair it with a reliable aquarium heater to hold your water in the right range.
Features
- Lightweight plastic thermometer with a suction cup mount
- Sticks to the inside of the aquarium glass at any height
- Easy-to-read dual Fahrenheit and Celsius scale
- Color-coded safety zone indicator for tropical fish
- Helps protect your fish from unsafe temperatures
- Safe for both freshwater and saltwater aquariums
How to Use
Wet the suction cup and press it against the inside of the aquarium glass where you can read it easily, ideally away from the heater so you read the true tank temperature rather than the warm water right at the element. Give it a minute to settle, then check the reading against the safety zone.
Specifications
| Type | Plastic aquarium thermometer with suction cup |
| Scale | Dual Fahrenheit and Celsius with color-coded safety zone |
| Mounting | Suction cup (inside glass) |
| Water type | Freshwater and saltwater |
Recommended Pairings
- Marina Submersible Heater โ hold a steady temperature, then confirm it with your thermometer.
- Marina Deluxe Floating Thermometer and the Stainless Steel Thermometer โ other easy-read styles to choose from.
- Squeaky's Digital Thermometer โ a probe-and-LCD option if you prefer a digital readout.
FAQ
Does it work in saltwater?
Yes. The plastic body and suction cup are safe for both freshwater and marine aquariums.
Where should I place it?
On the inside glass, away from the heater, so you read the average tank temperature and not just the warm water near the element.
What is the safety zone?
A color-coded band on the scale that shows the comfortable temperature range for most tropical fish, so problems are easy to spot at a glance.
Have a question?

Marina Plastic Thermometer w/Suction Cup


