Freshwater

For tanks of ≤ 130 cm

Difficulty: easy

For tanks of 20–25 cm

Difficulty: advanced

For tanks of 30–35 cm

Difficulty: medium

For tanks of 45–55 cm

Difficulty: medium

For tanks of 60–70 cm

Difficulty: medium

For tanks of 90–100 cm

Difficulty: easy

For tanks of 110–120 cm

Difficulty: advanced

For tanks of ≤ 25 cm

Difficulty: medium

For tanks of ≤ 36 cm

Difficulty: medium

For tanks of ≤ 50 cm

Difficulty: medium

For tanks of ≤ 70 cm

Difficulty: medium

For tanks of ≤ 85 cm

Difficulty: advanced