Reef Casa Refractometer — Salinity ATC ±0.001 SG with Bamboo Case Reef Aquarium - Reef Casa

The Reef Casa Refractometer is an optical salinity refractometer designed for discerning marine aquarists. With a measuring range of 1.000 to 1.070 SG and an accuracy of ±0.001 SG, it offers reliable and rapid readings essential for maintaining the ideal salinity of 1.025 SG in your reef aquarium. Its integrated automatic temperature compensation (ATC) eliminates reading errors due to ambient temperature variations. It comes with a pipette, a cleaning cloth, and an elegant bamboo wooden carrying case.

Key Benefits

• Accuracy ±0.001 SG: Measures specific gravity from 1.000 to 1.070 SG with reliable accuracy to maintain your reef parameters.
• Automatic Temperature Compensation (ATC): Accurate readings regardless of ambient temperature conditions – no need to wait for the water to cool down.
• Adjustable Eyepiece: Ergonomic design with adjustable focus for clear and comfortable scale reading.
• Bamboo Wooden Case: Elegant and durable protection for safe storage and transport of your refractometer.
• Robust Construction: Made from durable materials with a metal body and quality optics for a long lifespan.

Technical Specifications

• Specific Gravity Range: 1.000 – 1.070 SG
• Accuracy: ±0.001 SG
• Salinity Range: 0-100‰ with an accuracy of 0.1‰
• Temperature Compensation: ATC (automatic)
• Dimensions: 20 cm x 4 cm x 3.8 cm
• Eyepiece: Adjustable focus

Box Contents

• 1 Reef Casa Refractometer with ATC
• 1 pipette for sampling
• 1 cleaning cloth
• 1 bamboo wooden carrying case

Instructions for Use

Rinse the prism thoroughly with fresh water before each use. Using the included pipette, place 2-3 drops of saltwater onto the prism. Close the prism cover and look through the eyepiece to read the measurement on the scale. The demarcation line between the blue and white areas indicates the specific gravity of your water. For a reef aquarium, aim for a reading of 1.025 SG (35 ppt). Clean the instrument with fresh water after each use to ensure its longevity. Calibrate regularly with RO/DI water (expected reading: 1.000 SG).

Why Choose This Refractometer from ReefSolution

Complete your monitoring equipment with compatible products available at ReefSolution:

• Reef Casa Digital Thermometer — Digital thermometer with waterproof probe to monitor temperature alongside salinity.
• Reef Casa Pico 6 Mark II — Pico reef aquarium where salinity needs to be monitored frequently due to the small water volume.
• Reef Casa Laguna 24 — All-in-one 24-gallon shallow lagoon aquarium.

Frequently Asked Questions

What is the ideal salinity for a reef aquarium?

The ideal salinity for a reef aquarium is 1.025 SG (35 ppt). A range between 1.024 and 1.026 SG is acceptable. Stability is more important than the exact value — avoid sudden fluctuations that stress corals and invertebrates.

What is the difference between a refractometer and a hydrometer?

A refractometer measures the refraction of light through water to determine specific gravity, offering an accuracy of ±0.001 SG. A hydrometer (float) measures buoyancy and is much less accurate (±0.003-0.005 SG). The refractometer is the recommended tool for any serious reef aquarium.

How to calibrate the Reef Casa refractometer?

Place 2-3 drops of RO/DI water (pure water) onto the prism. The reading should indicate 1.000 SG. If the reading differs, use the small calibration screwdriver (included with some models or available separately) to adjust the calibration screw until the demarcation line is aligned with 1.000 SG. Recalibrate monthly to maintain accuracy.