---
product_id: 86260533
title: "SunGrow Aquarium Refractometer, 7.6 Inches, Measure Salinity of Water, Remarkable Accuracy, Includes Calibration Tool, Ensures Overall Health of Plant and Marine Life, Easy and Clear Reading"
brand: "sungrow"
price: "$70.65"
currency: USD
in_stock: true
reviews_count: 13
category: "Sun Grow"
url: https://www.desertcart.us/products/86260533-sungrow-aquarium-refractometer-7-6-inches-measure-salinity-of-water
store_origin: US
region: United States of America
---

# Saltwater-specific algorithm Precision focus eyepiece Auto temperature calibration 50°-86°F SunGrow Aquarium Refractometer, 7.6 Inches, Measure Salinity of Water, Remarkable Accuracy, Includes Calibration Tool, Ensures Overall Health of Plant and Marine Life, Easy and Clear Reading

**Brand:** sungrow
**Price:** $70.65
**Availability:** ✅ In Stock

## Summary

> 🌟 Dive into precision—because your reef deserves the best!

## Quick Answers

- **What is this?** SunGrow Aquarium Refractometer, 7.6 Inches, Measure Salinity of Water, Remarkable Accuracy, Includes Calibration Tool, Ensures Overall Health of Plant and Marine Life, Easy and Clear Reading by sungrow
- **How much does it cost?** $70.65 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/86260533-sungrow-aquarium-refractometer-7-6-inches-measure-salinity-of-water)

## Best For

- sungrow enthusiasts

## Why This Product

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

## Key Features

- • **Complete Pro Kit Included:** Comes with a durable hard case, precision pipette, and calibration tool—everything you need to maintain your aquatic ecosystem like a pro.
- • **Temperature-Proof Accuracy:** Automatic temperature calibration ensures flawless measurements between 50°F and 86°F, adapting seamlessly to your environment.
- • **Optimize Marine Life Health:** Maintain the ideal 35 ppt salinity to keep your fish and plants thriving, turning your aquarium into a vibrant underwater sanctuary.
- • **Tailored for Saltwater Mastery:** Engineered with a unique algorithm to deliver pinpoint salinity readings exclusive to marine and reef tanks—no more guesswork.
- • **Crystal-Clear Readings Every Time:** Adjustable focus eyepiece sharpens your view for effortless, error-free salinity checks—because clarity is power.

## Overview

The SunGrow Aquarium Refractometer is a 7.6-inch precision instrument designed specifically for saltwater aquariums. Featuring a saltwater-calibrated algorithm and automatic temperature compensation from 50°F to 86°F, it guarantees accurate salinity readings essential for marine and reef tank health. Equipped with an adjustable focus eyepiece for clear readings, it includes a calibration tool, pipette, and a sturdy storage case, making it the ultimate tool for maintaining optimal aquatic conditions.

## Description

Free delivery and returns on eligible orders. Buy SunGrow Aquarium Refractometer, 7.6 Inches, Measure Salinity of Water, Remarkable Accuracy, Includes Calibration Tool, Ensures Overall Health of Plant and Marine Life, Easy and Clear Reading at desertcart UK.

Review: A must have for salt aquariums - This arrived on time at first I thought it was broke the instructions that come with it were very basic and was about to send it back when I came across the video for it that explained it so much better. Happy fish happy owner it keeps a good reading, just don't put too much water on it. Tip to reset use ro water first that should show all blue if not set it to all blue before using saltwater otherwise you will get a false reading. Highly recommended for new reefers.
Review: SungGrow Refractometer - Works exactly as expected Very happy

## Features

- Specifically Designed Refractometer For Saltwater Aquarium --- The algorithm is made specifically for testing seawater and saltwater. This is different from a standard refractometer which is not calibrated to check salinity of aquarium water and will give an error in your readings.
- Automatic Temperature Calibration --- The calibration process should be carried out with both the room and the instrument at 68° F. The refractive index of a liquid changes with temperature. Due to the automatic temperature calibration, any changes in ambient temperature from 50° F- 86° F will not affect the accuracy of the reading.
- Easy And Clear Reading For Saltwater Aquariums And Reef Tanks --- The refractometer comes with a focus adjustment on the eyepiece, this will give you clarity of the optics and a sharp line for easy reading.
- Comes In A Solid Case Includes Pipette And Calibration Tool --- This refractometer is not only built extremely well, but it comes with a durable hard case for easy storage of the refractometer when not in use. It also includes a calibration tool and a pipette.
- Keep Your Fish And Plant Life In Optimal Well-being --- Pure saltwater is crucial for the vitality of your marine or reef aquarium. Use this refractometer to measure the salinity of the water, the target level of salinity in a reef tank should be 35 ppt.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B071RMR7BJ |
| Batteries Included | No |
| Batteries required | No |
| Best Sellers Rank | 25,056 in Pet Supplies ( See Top 100 in Pet Supplies ) 2 in Aquarium Hydrometers 339 in Aquarium Filter Accessories |
| Customer Reviews | 4.5 4.5 out of 5 stars (533) |
| Date First Available | 26 April 2017 |
| Item Weight | 20 g |
| Manufacturer reference | ZJSJRJ |
| Number of Items | 1 |
| Package Dimensions | 20.5 x 8.5 x 5.4 cm; 20 g |
| Quantity | 1 |

## Images

![SunGrow Aquarium Refractometer, 7.6 Inches, Measure Salinity of Water, Remarkable Accuracy, Includes Calibration Tool, Ensures Overall Health of Plant and Marine Life, Easy and Clear Reading - Image 1](https://m.media-amazon.com/images/I/71DvAhisavL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ A must have for salt aquariums
*by K***Z on 10 January 2024*

This arrived on time at first I thought it was broke the instructions that come with it were very basic and was about to send it back when I came across the video for it that explained it so much better. Happy fish happy owner it keeps a good reading, just don't put too much water on it. Tip to reset use ro water first that should show all blue if not set it to all blue before using saltwater otherwise you will get a false reading. Highly recommended for new reefers.

### ⭐⭐⭐⭐⭐ SungGrow Refractometer
*by A***R on 9 January 2026*

Works exactly as expected Very happy

### ⭐⭐⭐⭐⭐ So far so good
*by W***W on 12 April 2025*

So far so good, very reasonably priced

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-17*