Shop now and enjoy free shipping all month long 🎉

{"id":8354799321288,"title":"Marine Hydrometer Saltwater Aquarium - Density Meter with Thermometer","handle":"marine-hydrometer-saltwater-aquarium-density-meter-with-thermometer","description":"\u003ch3\u003eMarine Hydrometer Saltwater Aquarium - Density Meter with Thermometer\u003c\/h3\u003e\n\u003cp id=\"b\"\u003eARKA hydrometer with integrated thermometer for precise and quick measurement\nof salinity\/density and temperature in all saltwater aquariums. Made in\nFrance, in lab quality to high quality standards. Measuring range density:\n1.018 to 1.028, resolution: 0.0001, measuring range temperature: 8 °C to 35\n°C, maximum deviation +\/- 0.0002 at 25 °C. Recommended range: 1.022 to 1.024\nat 25 °C. Note the green-marked areas of the measuring scale and the scale for\ntemperature-related deviation on the thermometer. For precise measurements,\nuse the hydrometer free-floating in a large vessel at 25 °C. The matching\nmeasuring cylinder made of borosilicate glass 3.3 is optionally available as\nan accessory.\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n \u003cul class=\"a\"\u003e\n \u003cli\u003eDensity meter for saltwater The ARKA hydrometer determines density and salinity in the saltwater aquarium quickly and precisely. For stable water values and control of salinity during day-to-day running.\u003c\/li\u003e\n \u003cli\u003eWith integrated thermometer Measuring range density 1.018 to 1.028 at a resolution of 0.0001, temperature 8 to 35 C. Recommended range 1.022 to 1.024 at 25 C, marked green on the scale.\u003c\/li\u003e\n \u003cli\u003eEasy to use The hydrometer is used free-floating in a large vessel at the recommended temperature of 25 C and read at the waterline. Note the scale for temperature-related deviation.\u003c\/li\u003e\n \u003cli\u003eLab quality from France Made in France to strict quality standards with high measuring accuracy, maximum deviation +\/- 0.0002 at 25 C. For regular checking of sensitive parameters.\u003c\/li\u003e\n \u003cli\u003eCombines with a measuring cylinder For comfortable measuring, we suggest a suitable vessel such as the ARKA measuring cylinder of borosilicate glass 3.3, so density readings stay clean and controlled.\u003c\/li\u003e\n \u003c\/ul\u003e","published_at":"2026-11-14T20:58:38+11:00","created_at":"2026-11-14T18:16:06+11:00","vendor":"ARKA","type":"Thermometers","tags":["pets_UK_Nov2026"],"price":28000,"price_min":28000,"price_max":28000,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":45256523448520,"title":"Hydrometer","option1":"Hydrometer","option2":null,"option3":null,"sku":"uk-B078KDH4KY","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Marine Hydrometer Saltwater Aquarium - Density Meter with Thermometer - Hydrometer","public_title":"Hydrometer","options":["Hydrometer"],"price":28000,"weight":220,"compare_at_price":null,"inventory_management":"shopify","barcode":"710270146925","requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}],"images":["\/\/pawsplanetshop.com\/cdn\/shop\/files\/uk-B078KDH4KY.jpg?v=1794640568","\/\/pawsplanetshop.com\/cdn\/shop\/files\/71ikgfbmeAL.jpg?v=1794640568"],"featured_image":"\/\/pawsplanetshop.com\/cdn\/shop\/files\/uk-B078KDH4KY.jpg?v=1794640568","options":["Style Name"],"media":[{"alt":null,"id":31385436520648,"position":1,"preview_image":{"aspect_ratio":1.0,"height":2560,"width":2560,"src":"\/\/pawsplanetshop.com\/cdn\/shop\/files\/uk-B078KDH4KY.jpg?v=1794640568"},"aspect_ratio":1.0,"height":2560,"media_type":"image","src":"\/\/pawsplanetshop.com\/cdn\/shop\/files\/uk-B078KDH4KY.jpg?v=1794640568","width":2560},{"alt":null,"id":31385436553416,"position":2,"preview_image":{"aspect_ratio":1.0,"height":2560,"width":2560,"src":"\/\/pawsplanetshop.com\/cdn\/shop\/files\/71ikgfbmeAL.jpg?v=1794640568"},"aspect_ratio":1.0,"height":2560,"media_type":"image","src":"\/\/pawsplanetshop.com\/cdn\/shop\/files\/71ikgfbmeAL.jpg?v=1794640568","width":2560}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eMarine Hydrometer Saltwater Aquarium - Density Meter with Thermometer\u003c\/h3\u003e\n\u003cp id=\"b\"\u003eARKA hydrometer with integrated thermometer for precise and quick measurement\nof salinity\/density and temperature in all saltwater aquariums. Made in\nFrance, in lab quality to high quality standards. Measuring range density:\n1.018 to 1.028, resolution: 0.0001, measuring range temperature: 8 °C to 35\n°C, maximum deviation +\/- 0.0002 at 25 °C. Recommended range: 1.022 to 1.024\nat 25 °C. Note the green-marked areas of the measuring scale and the scale for\ntemperature-related deviation on the thermometer. For precise measurements,\nuse the hydrometer free-floating in a large vessel at 25 °C. The matching\nmeasuring cylinder made of borosilicate glass 3.3 is optionally available as\nan accessory.\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n \u003cul class=\"a\"\u003e\n \u003cli\u003eDensity meter for saltwater The ARKA hydrometer determines density and salinity in the saltwater aquarium quickly and precisely. For stable water values and control of salinity during day-to-day running.\u003c\/li\u003e\n \u003cli\u003eWith integrated thermometer Measuring range density 1.018 to 1.028 at a resolution of 0.0001, temperature 8 to 35 C. Recommended range 1.022 to 1.024 at 25 C, marked green on the scale.\u003c\/li\u003e\n \u003cli\u003eEasy to use The hydrometer is used free-floating in a large vessel at the recommended temperature of 25 C and read at the waterline. Note the scale for temperature-related deviation.\u003c\/li\u003e\n \u003cli\u003eLab quality from France Made in France to strict quality standards with high measuring accuracy, maximum deviation +\/- 0.0002 at 25 C. For regular checking of sensitive parameters.\u003c\/li\u003e\n \u003cli\u003eCombines with a measuring cylinder For comfortable measuring, we suggest a suitable vessel such as the ARKA measuring cylinder of borosilicate glass 3.3, so density readings stay clean and controlled.\u003c\/li\u003e\n \u003c\/ul\u003e"}

Marine Hydrometer Saltwater Aquarium - Density Meter with Thermometer

In Stock. Leaves warehouse within 2 - 3 business days

$280.00 AUD
Maximum quantity available reached.
Free Shipping Australia Wide
100% Safe & Secure Checkout
100 Days Return Policy *
1 Year Warranty *

Marine Hydrometer Saltwater Aquarium - Density Meter with Thermometer

ARKA hydrometer with integrated thermometer for precise and quick measurement of salinity/density and temperature in all saltwater aquariums. Made in France, in lab quality to high quality standards. Measuring range density: 1.018 to 1.028, resolution: 0.0001, measuring range temperature: 8 °C to 35 °C, maximum deviation +/- 0.0002 at 25 °C. Recommended range: 1.022 to 1.024 at 25 °C. Note the green-marked areas of the measuring scale and the scale for temperature-related deviation on the thermometer. For precise measurements, use the hydrometer free-floating in a large vessel at 25 °C. The matching measuring cylinder made of borosilicate glass 3.3 is optionally available as an accessory.

Product Features

  • Density meter for saltwater The ARKA hydrometer determines density and salinity in the saltwater aquarium quickly and precisely. For stable water values and control of salinity during day-to-day running.
  • With integrated thermometer Measuring range density 1.018 to 1.028 at a resolution of 0.0001, temperature 8 to 35 C. Recommended range 1.022 to 1.024 at 25 C, marked green on the scale.
  • Easy to use The hydrometer is used free-floating in a large vessel at the recommended temperature of 25 C and read at the waterline. Note the scale for temperature-related deviation.
  • Lab quality from France Made in France to strict quality standards with high measuring accuracy, maximum deviation +/- 0.0002 at 25 C. For regular checking of sensitive parameters.
  • Combines with a measuring cylinder For comfortable measuring, we suggest a suitable vessel such as the ARKA measuring cylinder of borosilicate glass 3.3, so density readings stay clean and controlled.

Buy with confidence as this product comes with 18 months full local warranty in Australia & New Zealand (unless otherwise stated in the overview).

This product also comes with the benefits of the Warranty. For further details please read our Warranty Guidelines.

You can also purchase 3 Year Extended Care. If you are interested please see our Extended Care Information.