Aquarium Cost Calculator
Estimate the total cost of setting up a freshwater, planted, or saltwater reef aquarium. Get an itemized shopping list with budget, mid-range, and premium options.
Itemized Shopping List
| Item | Budget | Mid-Range | Premium |
|---|---|---|---|
| Aquarium Tank | $30 | $45 | $75 |
| Aquarium Stand | $50 | $75 | $125 |
| Filter | $25 | $38 | $63 |
| Heater | $20 | $30 | $50 |
| LED Light | $25 | $38 | $63 |
| Substrate | $15 | $23 | $38 |
| Decorations | $20 | $30 | $50 |
| Test Kit | $25 | $38 | $63 |
| Water Conditioner | $8 | $12 | $20 |
| Fish / Livestock | $30 | $45 | $75 |
| Total | $248 | $374 | $622 |
Basic equipment, store-brand products
Trusted brands, better reliability
Top-tier gear, longest lifespan
Money-Saving Tips
- Watch for Petco's dollar-per-gallon sales for tanks up to 40 gallons
- Buy the API Master Test Kit instead of strips — cheaper per test and more accurate
- Pool filter sand works great as substrate for a fraction of the price
- Start with hardy, inexpensive fish like danios or guppies while your tank matures
- Buy equipment bundles or starter kits to save 20-30% versus buying individually
How It Works
This calculator estimates the total cost of setting up an aquarium by building an itemized equipment list based on your tank size, type, and budget level.
Base costs are calibrated for a 20-gallon freshwater tank and then scaled using the formula: Cost × (gallons / 20)^0.6. This power scaling accounts for the fact that equipment costs don't increase linearly with tank size — a 40-gallon filter doesn't cost twice as much as a 20-gallon filter.
Budget multipliers adjust all prices: budget gear (1x), mid-range (1.5x), and premium (2.5x). Planted tanks add lighting upgrades, enriched substrate, and fertilizers. Premium planted setups include a CO2 system. Saltwater reef tanks apply a 2x base multiplier and add salt mix, live rock, protein skimmer, and powerheads.
All estimates are approximate and based on typical retail pricing. Actual costs vary by brand, retailer, and local availability. Check the itemized list for links to recommended products.
Frequently Asked Questions
How much does it cost to set up a freshwater aquarium?
A basic freshwater aquarium setup for a 20-gallon tank costs roughly $200-$350 for budget equipment, $300-$500 for mid-range brands, and $500-$850 for premium gear. The biggest cost drivers are the tank, stand, and filter. Ongoing costs include fish food ($5-15/month), water conditioner ($5/month), and replacement filter media ($10-20 every few months).
Why are saltwater aquariums so much more expensive?
Saltwater reef aquariums require specialized equipment like protein skimmers ($100-400), powerheads for water circulation ($50-200), high-quality lighting for corals ($100-500), salt mix ($15-30/month), and RO/DI water filtration ($150-300). Live rock alone can cost $5-10 per pound, and most tanks need 1-2 lbs per gallon. The livestock (coral and marine fish) is also significantly more expensive than freshwater species.
What is the cheapest way to start an aquarium?
The most affordable way to start is with a 10-gallon freshwater tank. Watch for Petco's dollar-per-gallon sales. Use a sponge filter ($5-10) instead of a hang-on-back filter, pool filter sand for substrate ($5 for 50 lbs), and start with hardy, inexpensive fish like guppies or danios. A complete budget 10-gallon setup can be done for under $100 if you shop sales.
Is a planted tank more expensive than a fish-only tank?
Planted tanks have moderate additional upfront costs — mainly a better light ($30-100 more) and nutrient-rich substrate ($15-30 more). Some aquarists add CO2 injection ($40-200 for a complete system). However, planted tanks can save money long-term by reducing the need for artificial decorations and helping maintain water quality, which means fewer water changes and potentially healthier fish.
What ongoing costs should I budget for?
Monthly ongoing costs for a freshwater aquarium typically include fish food ($5-15), water conditioner ($3-5), electricity for filter/heater/light ($5-15), and occasional filter media replacement ($10-20 every 2-3 months). Budget an additional $20-40/month for saltwater tanks due to salt mix, RO/DI filters, and supplements. Set aside a small emergency fund for unexpected equipment failures or fish medications.