Showing 1-12 of 12 posts
Guides · Jul 12, 2026
Work out exactly how much gravel, sand or aqua soil your aquarium needs, the right depth for your tank, and how many bags to buy, with a free substrate calculator.
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Care Guides · Jul 12, 2026
Bettas do not belong in bowls. Here is the real minimum tank size for a betta fish in litres and gallons, plus heater, filter and tank mate advice.
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Equipment Guides · Jul 12, 2026
Pick the right aquarium heater wattage for your tank size and room temperature, with a simple watts-per-litre rule and a free heater calculator.
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Equipment Guides · Jul 12, 2026
Learn how to size an aquarium filter by turnover (litres per hour), why rated flow is misleading, and how to match filtration to your tank and fish.
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Setup Guides · Jul 12, 2026
Cycling a new aquarium builds the bacteria that keep fish safe. Here is the nitrogen cycle explained simply, plus a step-by-step fishless cycle.
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Equipment Guides · Jul 12, 2026
How much light aquarium plants need in lumens per litre, why low, medium and high light differ, and how to avoid algae, with a free light calculator.
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Care Guides · Jul 12, 2026
How much aquarium salt to add per litre for tonic and treatment doses, which fish tolerate salt, and how to remove it safely, with a free salt calculator.
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Maintenance Guides · Jul 12, 2026
A simple aquarium cleaning routine: how much water to change, how to vacuum gravel and clean the glass without harming your filter bacteria or stressing fish.
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Guides · Jun 21, 2026
Odd-shaped aquariums are tricky to measure. Here is how to calculate the volume of hexagon and corner fish tanks accurately.
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Conversions · Jun 17, 2026
US gallons and UK gallons are not the same. Here is how to convert your fish tank volume correctly between litres and both gallons.
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Guides · Jun 13, 2026
Learn the simple formula to calculate the volume of any fish tank in litres and gallons, with worked examples for every shape.
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Guides · Jun 9, 2026
Water is heavy. Learn how to calculate the weight of a full fish tank from its volume, and check your stand and floor can take it.
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