Aquarium Fill
Fill glass tanks with water. Water settles at the bottom, and every row and column must hold exactly the amount shown.
- Logic
- New puzzle every day
- Free, plays in your browser
- Mouse or touch
- Added 30 October 2026
- #aquarium
- #water
- #gridlogic
- #dailypuzzle
- #levels
- #logic
Aquarium Fill
0% · Getting ready
Loading Aquarium Fill 0%Watch a 20-second trailer
A real run of the game, recorded with captions and no sound.
How to play
- The grid is cut into tanks. Water settles at the bottom of each tank, so all cells at or below its water line are full.
- Tap a cell to set its tank's water line there. Tap a water cell to lower the line, or tap again to drain the tank.
- The numbers beside the grid say how many water cells each row and column must hold. They turn green when they match.
- Any answer that fits all the numbers wins. Undo and Restart are always available.
Controls: mouse or touch. Made by CalcoTools.
Tips and strategy
- A row with a 0 means no tank may have water at that height.
- A row with a number as large as the grid is wide must be water everywhere.
- Start with the lowest rows. Water in a high row also fills every row below it in that tank.
- A red number means too much water in that line.
FAQ
- Why does water fill from the bottom?
- Like a real tank, water sinks. If a cell has water, every cell below it in the same tank does too.
- Can a tank stay empty?
- Yes. Tap its lowest water cell to drain it, or never fill it.
- Is the daily the same for everyone?
- Yes, on the same UTC day.
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