How to PROPERLY test salinity in your saltwater aquarium! скачать в хорошем качестве

How to PROPERLY test salinity in your saltwater aquarium!

A refractometer is one of the most important tools in a reefer's kit. Unlike plastic swing-arm hydrometers, which are notoriously inaccurate, a refractometer gives you a precise reading by measuring how light bends through a drop of water. Here is how to use, calibrate, and maintain yours to keep your coral happy. 🛠️ Step 1: Calibration (Don't skip this!) Before testing your tank water, you must ensure the device is "zeroed out." Temperature changes can affect the metal and glass, so it’s best to calibrate it in the same room as your aquarium. Clean the prism: Wipe the glass prism and the plastic cover with a soft, lint-free cloth. Add Calibration Fluid: Place 2–3 drops of 35ppt Calibration Fluid (preferred for reef tanks) or distilled water onto the prism. Close the cover: Ensure there are no air bubbles, as these will distort the light. Look through the eyepiece: Point the device toward a bright light source. Adjust the screw: Use the small screwdriver provided with your kit to turn the calibration screw until the blue/white line sits exactly at 1.026 (35ppt) for calibration fluid, or 0 for distilled water. 🧪 Step 2: Testing Your Tank Water Once calibrated, you’re ready to check your salinity. Dry the Prism: Ensure the calibration fluid is completely wiped away. Apply Sample: Use a pipette to take a small sample of water from a high-flow area of your tank. Place 2–3 drops on the prism. Wait 30 Seconds: This allows the water sample to reach the same temperature as the refractometer (ATC - Automatic Temperature Compensation). Read the Scale: Look through the eyepiece. The point where the blue area meets the white area is your salinity level. Target for Reef Tanks: Aim for 1.025 – 1.026 S.G. (Specific Gravity) or 33–35ppt. 🧼 Step 3: Cleaning & Storage Salt is corrosive. If you don't clean your refractometer, the salt will eventually pit the glass or seize the calibration screw. Rinse with Fresh Water: After every use, wipe the prism with a damp cloth (using RODI or distilled water). Dry Thoroughly: Use a microfiber cloth to prevent scratches. Store in the Case: Keep it in its padded box to protect the internal optics from drops or dust. 💡 Pro-Tips for "Make Coral Happy" Results Avoid "Swing-Arms": If you are still using a plastic hydrometer with a needle, keep it as a backup, but trust your refractometer for your weekly checks. Check Monthly: Calibrate your refractometer at least once a month. They can "drift" over time. Watch for Bubbles: If your reading looks fuzzy or slanted, you likely have an air bubble trapped under the plastic cover. Clean it and try again.