---
product_id: 3339429
title: "Marina Floating Thermometer for Betta Fish Tank with Suction Cup, Aquarium Thermometer, 11201A1"
brand: "marina"
price: "3.43 OMR"
currency: OMR
in_stock: false
reviews_count: 13
url: https://www.desertcart.com.om/products/3339429-marina-floating-thermometer-for-betta-fish-tank-with-suction-cup
store_origin: OM
region: Oman
---

# Compact 4.25-inch immersion depth Strong suction cup mount Accurate analog reading ±0.5°C Marina Floating Thermometer for Betta Fish Tank with Suction Cup, Aquarium Thermometer, 11201A1

**Brand:** marina
**Price:** 3.43 OMR
**Availability:** ❌ Out of Stock

## Summary

> 🌊 Keep your betta’s world perfectly balanced with precision and style!

## Quick Answers

- **What is this?** Marina Floating Thermometer for Betta Fish Tank with Suction Cup, Aquarium Thermometer, 11201A1 by marina
- **How much does it cost?** 3.43 OMR with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/products/3339429-marina-floating-thermometer-for-betta-fish-tank-with-suction-cup)

## Best For

- marina enthusiasts

## Why This Product

- Trusted marina brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Discreet & Compact:** Slim 4.25-inch size fits seamlessly in any tank
- • **Durable & Reusable:** Reliable plastic and glass build for long-term use
- • **Safety Zone Indicator:** Visual guide tailored for tropical fish comfort
- • **Effortless Installation:** Suction cup design for instant, no-fuss setup
- • **Precision You Can Trust:** Spot-on temperature readings to keep your betta thriving

## Overview

The Marina Floating Thermometer 11201A1 offers millennial fishkeepers an ultra-accurate analog temperature reading with a built-in safety zone indicator, ensuring optimal tropical fish care. Its compact 4.25-inch design and strong suction cup make installation effortless and discreet, while durable materials guarantee long-lasting reliability. Trusted by thousands, this affordable essential prevents costly temperature mishaps and keeps your aquarium environment perfectly calibrated.

## Description

Marina Floating Thermometer for Betta Fish Tank with Suction Cup, Aquarium Thermometer, 11201A1

Review: Very accurate. I have confidence in this thermometer. For $2.49 you can't complain. - I was using one of those ubiquitous cheap digital thermometers on desertcart. The temperature fluctuated a lot with it. And I just really started to doubt it. I ordered this guy and it was 6 degrees hotter than the digital! Sure enough the digital thermometer was way off by 6 degrees! My poor fish was in 86 degrees water for a month. I am new to the hobby. And he is a betta....so this is the extreme end of the high temperature range. I'm just so glad I bought this. I tested this in a cup crammed full of ice and some water. This temperature read a perfect 32 degrees....this is how you calibrate a thermometer. The digital thermometer read 26. I don't think i'll ever be able to trust a digital thermometer again. The suction cup is glued in place. You can not swivle the thermometer to face a certain way. This doesn't bother me as it ws so cheap. This is $2.49. It works great. And is easily hidden behind a plant. I think the people who said the suction cup broke....or left a mark....i'm pretty sure those reviewers have acrylic tanks. Probably low quality acrylic. This is a $2.49 thermometer that is 100% accurate. UPDATE: i have now tested this thermometer against a few digitals. One being a very expensive digital. This thermometer is spot on accurate.
Review: Great product - Easy to install Worth every single penny

## Features

- Easy to read floating aquarium thermometer with suction cups
- Includes a safety zone indicator appropriate for most tropical fish
- Equipped with suction cups to attach to the side of your fish tank
- Ensures your aquarium is at the proper temperature
- Thermometer is 4.25 inches tall

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0002AQITK |
| ASIN  | B0002AQITK |
| Age Range (Description) | All ranges |
| Best Sellers Rank | #107,281 in Pet Supplies ( See Top 100 in Pet Supplies ) #93 in Aquarium Thermometers |
| Brand | Marina |
| Brand Name | Marina |
| Color | multicolor |
| Customer Reviews | 4.4 4.4 out of 5 stars (18,048) |
| Date First Available | October 30, 2005 |
| Date First Available  | October 30, 2005 |
| Department | Unisex-Adult |
| Department  | Unisex-Adult |
| Directions | Description The MARINA Floating Thermometer with suction cup is accurate and easy to read. It has a safety zone indicator for most tropical fish. Protect your fish from unsafe temperatures. Simply suction thermometer in the aquarium and you are ready to go. For fresh or saltwater aquariums. |
| Display Type | Analog |
| Global Trade Identification Number | 00015561112017 |
| Immersion Depth | 4.25 Inches |
| Included Components | Marina Floating Thermometer for Betta Fish Tank with Suction Cup, Aquarium Thermometer, 11201A1 |
| Indoor/Outdoor Usage | Indoor |
| Is Discontinued By Manufacturer  | No |
| Item Dimensions LxWxH | 7 x 4 x 1 inches |
| Item Length | 4.25 Inches |
| Item Package Dimensions L x W x H | 7.01 x 3.98 x 0.98 inches |
| Item Weight | 0.01 Kilograms |
| Item model number | 11201A1 |
| Item model number  | 11201A1 |
| Manufacturer | Rolf C. Hagen (USA) Corp. |
| Manufacturer  | Rolf C. Hagen (USA) Corp. |
| Material | Plastic |
| Model Name | Marina Floating Thermometer for Betta Fish Tank with Suction Cup, Aquarium Thermometer, 11201A1 |
| Number of Items | 1 |
| Outer Material | Glass |
| Product Care Instructions | Hand Wash Only |
| Product Dimensions  | 7 x 4 x 1 inches; 0.35 ounces |
| Response Time | 500 Milliseconds |
| Reusability | Reusable |
| Size | 1 Count (Pack of 1) |
| Special Feature | floating stick to glass |
| Style | Thermometer |
| Target Audience Keyword | Fish |
| UPC | 015561112017 |
| Unit Count | 1 Count |
| Upper Temperature Rating | 40 Degrees Celsius |
| Warranty Description | Warranty |

## Product Details

- **Age Range (Description):** All ranges
- **Brand:** Marina
- **Color:** multicolor
- **Display Type:** Analog
- **Included Components:** Marina Floating Thermometer for Betta Fish Tank with Suction Cup, Aquarium Thermometer, 11201A1
- **Model Name:** Marina Floating Thermometer for Betta Fish Tank with Suction Cup, Aquarium Thermometer, 11201A1
- **Outer Material:** Glass
- **Product Care Instructions:** Hand Wash Only
- **Special Feature:** floating stick to glass
- **Unit Count:** 1 Count

## Images

![Marina Floating Thermometer for Betta Fish Tank with Suction Cup, Aquarium Thermometer, 11201A1 - Image 1](https://m.media-amazon.com/images/I/81kPG87+wXL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Very accurate. I have confidence in this thermometer. For $2.49 you can't complain.
*by K***E on September 8, 2018*

I was using one of those ubiquitous cheap digital thermometers on Amazon. The temperature fluctuated a lot with it. And I just really started to doubt it. I ordered this guy and it was 6 degrees hotter than the digital! Sure enough the digital thermometer was way off by 6 degrees! My poor fish was in 86 degrees water for a month. I am new to the hobby. And he is a betta....so this is the extreme end of the high temperature range. I'm just so glad I bought this. I tested this in a cup crammed full of ice and some water. This temperature read a perfect 32 degrees....this is how you calibrate a thermometer. The digital thermometer read 26. I don't think i'll ever be able to trust a digital thermometer again. The suction cup is glued in place. You can not swivle the thermometer to face a certain way. This doesn't bother me as it ws so cheap. This is $2.49. It works great. And is easily hidden behind a plant. I think the people who said the suction cup broke....or left a mark....i'm pretty sure those reviewers have acrylic tanks. Probably low quality acrylic. This is a $2.49 thermometer that is 100% accurate. UPDATE: i have now tested this thermometer against a few digitals. One being a very expensive digital. This thermometer is spot on accurate.

### ⭐⭐⭐⭐⭐ Great product
*by J***E on January 4, 2026*

Easy to install Worth every single penny

### ⭐⭐⭐⭐ basic thermometer but a little hard to see
*by P***F on August 26, 2020*

This is a very basic, simple thermometer that sticks to the side of the aquarium well and does not take up much space inside. Since it is a mercury thermometer, it is very accurate. It has a clearly marked "safe zone" that can be seen easily. The only downside is because it is so small it is almost impossible to see the numbers if you need a precise measurement. For a basic community tank where you are looking for that 72-78ish range this works well. It confirms that the heater is working correctly and the fish are not too hot or too cold.

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*Product available on Desertcart Oman*
*Store origin: OM*
*Last updated: 2026-02-28*