Important Trading Notice:

Our store will be closed between the 17th of February and the 6th of March 2020.

  • Orders received before 12pm (midday) on the 17th will be processed, packed and posted as usual.
  • During this period the payment portal will remain open - as we have loyal customers who have requested the ability to purchase required goods for immediate shipping upon our return. This means purchases may be made during our closed period - however they will not be processed and shipped until our return on the 6th of March 2020.
  • If you happen to make a purchase during this period and waiting until the 6th of March 2020 is unsuitable please feel free to cancel the order before the 3rd of March 2020 and we will refund you in full.

An email with this information will also be sent after purchase, please let us know if you wish to reverse the transaction and we will be more than happy to sort it out. A staff member will monitor emails every few business days to ensure refunds are processed ASAP for those who send through requests.

You have our sincerest apologies for any frustration or disappointment this may cause you.

Kindest regards,

The Team@ClickFetch

Floating Aquarium Glass Hydrometer

In Stock

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Registered Post (FREE for orders over $50) - $4.50
Registered Post includes tracking.

Once your order is dispatched you may track the order by navigating to "My Account" > "My Orders" > and selecting the "Track" button against the order you wish to view.

An email may also be sent to your inbox (be sure to check your spam folder)

Important: All Couriers and Shipping companies are experiencing heavy delays. Orders may take longer than usual to arrive

Express - $11.00
Express Post is sent via Australia Post

The next business day delivery is only guaranteed by Australia Post within their Express Post Network as outlined on their website.

Please note: We are currently experiencing a high demand of orders, if your item is required urgently for medical reasons please visit the "Contact Us" page to let us know and our team will do their best to assist.

Express orders are prioritised during packing and handling but are still subject to the same processing time, and handling delays as other shipping options.

Important: All Couriers and Shipping companies are experiencing heavy delays. Orders may take longer than usual to arrive

FREE Standard Shipping - $0.00 (ETA: 10 days)
*Estimated arrival within 10 business days after dispatch - in store packing and handling times may increase this timeframe.

Free Standard Delivery
- For Domestic customers only.
- Does not include tracking.
If tracking is required please be sure to select Registered Post

Important: All Couriers and Shipping companies are experiencing heavy delays. Orders may take longer than usual to arrive, if concerned please select the Registered Post option above to ensure peace of mind and oversight on your item location.
If your order is required ASAP be sure to select the Express Post option.

Product Details

There are several common methods used to measure specific gravity. The most common are (1) hydrometers, (2) conductivity meters and (3) refractometers.

Hydrometers are the most common instrument used in the aquarium industry.

  • Material: Glass Colour: As the picture
  • For Salt Water or Fresh water 
  • Easy to use
  • Measures both temperature and gravity of the water
  • Green indicators are ideal range of water temperature and specific gravity for most salt water / marine aquariums Instruction: Place the hydrometer into water, and let it flow freely in the water If water level below the green indicator means more fresh water is required If water level above the green indicator means more salt water is required Size:20cm/7.87"


Product Features

Normal Values & Definitions

  • When measuring how “salty” sea water is, we measure the “specific gravity”.
  • Salinity, a term that is often used when meaning specific gravity, is really a measurement of the sodium chloride component of sea water. Specific gravity is the ratio between the weight of a given volume of sea water and the weight of an equal volume of distilled water. It is usually measured with the aid of an hydrometer.
  • The value of the normal specific gravity of sea water at a temperature of 20°C is 1.024. SALINITY is a measure of the total salts in a given weight of sea water. It is measured in parts per thousand, Normal value is 34%. Do not confuse salinity with specific gravity.


  • 0 to 40oC temperature
  • 1.000 to 1.060 SG.
  • Glass construction.

Product ID: Hydrometer

SKU Hydrometer
Brand Unbranded
Shipping Weight 0.2500kg Test
Shipping Width 0.050m
Shipping Height 0.050m
Shipping Length 0.050m
Unit Of Measure ea

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