
Aquarium planner
List what the next tank needs, from the filter to the fish, and give each line a cost. The planner adds up the budget and checks the stocking as you go, free and without an account.
Only checking the stocking? Use the stocking calculator →How to plan an aquarium build
- 01
The tank
Choose the tank first. Its volume and water type decide what the rest of the list can hold.
- 02
Equipment and hardscape
Most tropical tanks need a filter, a heater and a light, and a planted tank may want CO₂. The substrate, rock and wood go in before the water, so they come early on the list.
- 03
Livestock and plants
The stocking band uses adult sizes, so a plan that reads Comfortable still fits once the fish grow. Cycle the tank until ammonia and nitrite read 0 before the first fish goes in.
Add the filter, heater, light and substrate the tank needs. Give each line a cost and the budget adds them up.
A saved plan keeps going
Save the plan to a free account and it moves into the planner. Tick off each item as it arrives, and the budget shows what is still to buy. When the tank is set up, convert the plan, and every item on the list comes across to the new tank.


Common questions
How much does a fish tank setup cost?
It depends on the tank's size and the gear it needs. Price each line in the planner, and the budget shows the total and any line still without a cost.
Do I need an account to use the planner?
No. The planner is free and works without an account. A free account saves the plan to the planner in the app.
Does the planner keep my plan?
The plan lives in the page address, so a bookmark or a copied link brings it back. Save it to a free account to keep it in the app.
How is the stocking level worked out?
The planner runs the same estimate as the stocking calculator. It weighs adult size, minimum tank size, temperament and group size against the volume you set.
Is a cost the price of one or the whole line?
The whole line. A school of 12 cardinal tetras takes one cost, the total you expect to pay for all 12.
Can I share a plan?
Yes. Copy the link from the save card, and anyone who opens it sees the same plan without an account.
What does the planner add to the stocking calculator?
The planner adds equipment, hardscape and a cost on every line. The stocking band, the water fit and the group warnings work the same in both.

Save the plan
Build the tank
Save this plan to a free account and it becomes a build list you can tick off. Convert it once the tank is set up, and every line moves onto the tank's record.