Aquarium Plan Builder
Bring everything together in one place: choose a tank, add the fish you want, and see your stocking status, tank-mate compatibility, and equipment sizing — heater, filter, substrate, and total weight — all from the same engines that power our individual calculators.
1 · Your tank
Most tanks run at about 90–95%.
2 · Your fish
No fish added yet. Add species to build your plan.
3 · Your plan
No fish selected yet. Add species to build your stocking plan.
Tank
- Nominal capacity
- 19.95 US gal / 75.51 L
- Actual water (90% fill)
- 17.95 US gal / 67.96 L
Heater
- Recommended heater wattage
- 75 W
- Temperature rise needed
- 10°F (5.6°C)
Filter
- Recommended filter flow
- 80 GPH (302 LPH)
- Minimum flow
- 60 GPH
Substrate
- Substrate volume (Gravel (average))
- 9.44 L / 576 cu in
- Estimated weight
- 15.86 kg / 34.96 lb
Weight
- Water weight
- 129.02 lb
- Estimated total weight
- 201.49 lb
Saved on this device
Nothing saved yet. Plans are stored in your browser only — no account needed.
See also: individual calculators for deeper numbers.
How the plan is built
Your plan runs through the same algorithms as the standalone tools, so the numbers match: the Volume engine sizes the tank and its actual water, the Stocking algorithm scores bioload against your filtration level, the Compatibility engine checks every species pair in the plan, and the equipment engines return heater wattage, filter flow, substrate volume, and total weight.
Nothing is uploaded. Saved plans live in your browser's local storage on this device only — there is no account and no server.
Important limitations
- Bioload points are a planning heuristic, not a lab measurement — individual fish vary.
- Compatibility is about probability, not certainty. Some individuals break every rule.
- Equipment results are sizing ranges; manufacturer ratings differ from real-world performance.
- Always cycle the tank fully before adding the whole plan at once.
Explore the pieces
Last reviewed: