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Articles

Specific Gravity…What’s It All About?

If you’re new to the hobby of fishkeeping then you may have heard the term “specific gravity” bandied about and wondered what it’s all about. In simple terms, specific gravity measures the salinity of the water in your tank; “salinity” refers to the amount of dissolved salts which are present in the water. The balance…

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Q&A's

Would it be beneficial to reduce the specific gravity of aquarium water from 1.025 to 1.021?

Yes. The higher the concentration of salts in the water the harder the fish have to work to rid themselves of it owing to the increased intake of saltwater. If the salinity is lowered the metabolism of the fish is reduced with a consequent lowering of stress. Complete the task over a period of several…

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Q&A's

How does specific gravity (S.G) change within the aquarium?

At any point where the salt-water interfaces with air, constant evaporation is taking place. However, only water molecules evaporate leaving the various salts behind to form an increasingly dense solution. It is essential, therefore, that top-up water must be freshwater (of appropriate quality) to redress the balance. You have just read another great aquarium blog…

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