Aquarium Calculators

How much filter media/supplements do I need?

Keeping the water in your reef tank clean with proper parameters is essential to the health and well-being of your aquarium inhabitants. By entering your tank size and/or water conditions into our Reef Chemistry Calculator, you can find out precisely how much supplement to dose or media to use to get and keep your tank on track.

Calculate Media/Supplements

How much water is inside my tank?

Knowing your aquarium's water volume is extremely useful. You can use it to determine how much your water needs to circulate, which filtration equipment to buy, how much water to change, how much medicine or supplement to dose and even how much livestock can safely inhabit your tank.

Calculate Aquarium Volume

How much sand will I need?

Whether you're planning a shallow sand bed for a fish-only tank or a deep sand bed for your mixed reef, our CaribSea-powered sand bed calculator helps ensure you buy the right amount of sand for your system. Just enter your aquarium's length, width and ideal sand bed depth to calculate how many pounds of sand you'll need.

Calculate Sand Bed

How much will my electric bill be?

Our aquarium electrical calculator will give you a pretty good idea of how much you'll fork over for your monthly and yearly electricity bills. Just plug in the wattage of your equipment—lights, pumps, protein skimmers, reactors, etc. —and how many hours per day you intend to run each of them and voilà!

Calculate Electric Bill

How many liters are in a gallon?

Aquarium supply manufacturers list product specs in a variety of different units. Use our handy measurement unit converter to change Celsius into Fahrenheit, centimeters into inches, ounces into pounds and liters into gallons. Temperature, length, weight and volume conversions are all available.

Calculate Unit Conversion