Aquarium Cost Calculator
Estimate the total cost of setting up and maintaining an aquarium. Get a detailed breakdown of equipment, fish, plants, and monthly running costs for freshwater, saltwater, or reef tanks.
How the aquarium cost calculator works
This calculator estimates the total cost of setting up an aquarium, including the tank, stand, equipment, substrate, decorations, plants, fish, and ongoing maintenance. It also calculates monthly and yearly running costs including electricity, food, and water treatments. Simply enter your tank size, choose your tank type and equipment quality, and add your livestock preferences to get a full cost breakdown.
Whether you’re planning a small freshwater nano tank or a large reef system, this tool helps you budget accurately before you start buying equipment.
Step 1: Tank Information
Understanding Aquarium Costs
Setup costs vary widely based on tank size, type, and equipment quality. Freshwater setups are generally the most affordable, while reef tanks with corals and advanced equipment are the most expensive. Monthly running costs include electricity, food, and water treatments.
Step 2: Equipment & Add-ons
Budgeting Tips
Start with a smaller tank if you’re new to the hobby. Larger tanks require more equipment, more water changes, and higher electricity costs. Always budget 20% extra for unexpected expenses like medications or replacement parts.
Aquarium Cost Summary
Total Setup Cost
Tank Size Comparison
| Tank Size | Setup Cost | Monthly Cost | Yearly Cost | Cost per Gallon |
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* Based on your selected tank type and equipment quality. Actual costs may vary by region and brand.
Detailed Cost Breakdown
How the Calculation Works
Cost Estimation Method
Setup costs are calculated based on tank size, type, equipment quality, and selected add-ons. Monthly costs include electricity (heater, filter, lights), fish food, water conditioner, and replacement filter media. Yearly costs include maintenance supplies and 10% equipment replacement allowance.
Frequently Asked Questions
How much does it cost to set up an aquarium?
A basic 20-gallon freshwater setup costs £150–£300, while a 50-gallon freshwater tank runs £400–£800. Saltwater and reef tanks are significantly more expensive, often £800–£2,500+ for a 50-gallon system.
What is the most expensive part of an aquarium?
For freshwater tanks, the tank itself and lighting are often the biggest costs. For saltwater and reef tanks, the lighting system, protein skimmer, and live rock/coral can be the most expensive components.
How much does it cost to run an aquarium per month?
Monthly running costs include electricity (heater, filter, lights), food, water conditioner, and maintenance supplies. A 50-gallon freshwater tank typically costs £10–£25 per month, while a reef tank can cost £30–£60+ per month.
Is saltwater aquarium more expensive than freshwater?
Yes, saltwater aquariums are significantly more expensive than freshwater setups. Equipment costs are higher, salt mix adds ongoing expense, and fish/coral are typically much more expensive. A saltwater tank can cost 2–4× more than a similar-sized freshwater tank.
How much does an aquarium cost per gallon?
A basic freshwater setup costs roughly £10–£20 per gallon, a mid-range setup £20–£40 per gallon, and a high-end reef setup can cost £50–£150+ per gallon depending on equipment and livestock.
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