Stocking Calculator
Freshwater only for now
Freshwater aquarium stocking checks with cycle readiness, stocking load, compatibility, and safer setup suggestions. Saltwater support will be added later.
- 1Set up your tank
- 2Add current and wanted fish
- 3Add plantsOptional
- 4Save your planOptional
- 5Run the tank check
Tank20 gal
Fish0
CycleNot sure
Cover67%
FilterNot set
Plants/decorMedium / Some
Tank setup
Start with tank size, cycle status, cover, and water stability.
Optional
GPH
Use the filter's rated GPH if you know it. Most community tanks need at least 4x turnover.
Is your tank cycled?
Choose "Not sure" if you have not tested ammonia and nitrite yet.
Not sure if your tank is cycled?
Learn fishless cyclingCycling status is marked as "Not sure," so TankFlare is treating this setup as risky. Fishless cycling helps make your tank safe before adding fish.
Live plants
Decor
Tank support
Balanced cover
Good beginner support.
67%
Plants: medium Decor: some
Optional details
Add test results if you have them. If not, TankFlare will still score your tank using your given information.
ppm
ppm
ppm
dGH
dKH
Safe target:ammonia 0nitrite 0nitrate lower is betterpH/GH/KH inside species range
Build your stocking plan
Add your current and wanted fishes, adjust quantity, and run compatibility check.
Loading fish cards...
1Qty
Species selectorChoose a fish
Search by common name, scientific name, tank size, or care tags.
Fish lists
No fish added yet.
Have fish list
No fish in your have list yet.
Want fish list
No fish in your want list yet.
Plants (optional)
Optional. Add plants you have or want so the report can flag fish and plant conflicts.
Plants (optional)
Loading plant cards...
1Qty
Plant selectorChoose a plant
Search by name, placement, light, CO2, or care tags.
Plant lists
No plants added yet.
Have plants list
No plants in your have list yet.
Want plants list
No plants in your want list yet.
Save My Tank
Saving on this device. Sign in from Account to sync tanks.
Select a saved tank to load it. Use Clear Tanks to delete your saved tank list.