Aquarium
Aquarium Volume Calculator
Tank volume in litres and gallons, with the real water volume after substrate.
litres = length × width × water depth ÷ 1…
Also called fish tank volume · tank litres calculator
Garden, Farm & Pets · 9 calculators
Aquarium Calculators
Aquarium volume and weight, fish stocking, water changes, salt dosing, glass thickness, pump flow, heater wattage and gravel.
Aquarium
Fish Stocking Calculator
How many fish a tank can hold, by the surface area and body length rules.
Surface area rule: 1 cm of fish per 12 cm…
Also called how many fish in my tank · aquarium stocking level
Aquarium
Aquarium Water Change Calculator
Water to change, dechlorinator dose and the nitrate reduction achieved.
change volume = tank volume × change perc…
Also called water change percentage · aquarium maintenance calculator
Aquarium
Aquarium Salt Dosage Calculator
Salt needed for a marine tank or a freshwater salt treatment, at any concentration.
salt = target concentration × water volume
Also called marine salt calculator · aquarium salt dose
Aquarium
Aquarium Weight Calculator
Full weight of a set-up aquarium, and whether the floor and stand can take it.
weight = water (1 kg per litre) + glass +…
Also called fish tank weight · how heavy is my aquarium
Aquarium
Aquarium Glass Thickness Calculator
Glass thickness needed for a tank of a given height, with the safety factor.
Thickness scales with the cube root of wa…
Also called tank glass thickness · aquarium glass calculator
Aquarium
Aquarium Pump Calculator
Filter and pump flow rate needed for a tank, allowing for head loss.
pump rating = volume × turnover ÷ (1 − lo…
Also called filter flow rate calculator · aquarium turnover rate
Aquarium
Aquarium Heater Wattage Calculator
Heater wattage for a tank from the temperature rise needed above room temperature.
watts ≈ litres × (temperature rise ÷ 5) ×…
Also called fish tank heater size · aquarium heater calculator
Aquarium
Aquarium Gravel Calculator
Substrate needed for a tank at your chosen depth, in kilograms and litres.
litres = length × width × depth ÷ 1000, t…
Also called substrate calculator aquarium · how much gravel for fish tank
Key aquarium formulas
| Aquarium Volume | litres = length × width × water depth ÷ 1000 |
|---|---|
| Fish Stocking | Surface area rule: 1 cm of fish per 12 cm² of water surface |
| Aquarium Water Change | change volume = tank volume × change percentage |
| Aquarium Salt Dosage | salt = target concentration × water volume |
| Aquarium Weight | weight = water (1 kg per litre) + glass + substrate + decor |
| Aquarium Glass Thickness | Thickness scales with the cube root of water height and the safety factor |
| Aquarium Pump | pump rating = volume × turnover ÷ (1 − losses) |
| Aquarium Heater Wattage | watts ≈ litres × (temperature rise ÷ 5) × location factor |
| Aquarium Gravel | litres = length × width × depth ÷ 1000, then × density |