Aquarium
Fill the outlined tanks with water that settles level; the numbers count the water in each row and column.
Rules
Water settles: each tank fills from the bottom up, level all the way across.
✓ Settled ✗ Floating ✗ Not level A number beside a row or above a column counts its water cells.
✓ 3 in the row ✗ Not 2
Example: Fish Tank
Playing here: Tap a cell to fill it with water, again for ✕, again to clear.