Freshwater

For tanks of ≤ 120 cm

Difficulty: easy

For tanks of 45–55 cm

Difficulty: medium

For tanks of 60–70 cm

Difficulty: medium

For tanks of 90–100 cm

Difficulty: easy

Difficulty: easy

For tanks of 45 cm

Difficulty: easy

For tanks of 60 cm

Difficulty: easy

For tanks of ≤ 25 cm

Difficulty: advanced