Pick a tank size — we build a complete, correctly-sized setup shopping list.
Updated June 2026
Pick your tank size and we'll build a complete, correctly-sized shopping list — tank, filter, heater, light, and the essentials. Every link is to Amazon (opens the app on mobile).
Most failed first tanks come from mismatched gear — an undersized filter, no heater, or skipping a test kit. This builder sizes the essentials to your tank so nothing's missing and nothing's overkill.
Cycle before you stock
Once the gear arrives, set it up and cycle the tank before adding fish — see our nitrogen cycle guide. Then plan your fish with the stocking and compatibility calculator.
FAQ
What do I need to set up an aquarium?
At minimum: a tank, a filter sized to ~4x your volume per hour, a heater for tropical fish, a light, substrate, water conditioner, and a test kit. The builder above lists it all sized to your tank.
How much does it cost to start an aquarium?
A complete beginner freshwater setup typically runs $80–250 depending on tank size and whether you buy an all-in-one kit or piece it together. Kits are usually the cheapest way to start.