Freshwater

Difficulty: advanced

For tanks of ≤ 120 cm

15 ml

Difficulty: easy

For tanks of 45–55 cm

15 ml

Difficulty: medium

For tanks of 60–70 cm

For tanks of < 250 l

Difficulty: easy

For tanks of 90–100 cm

For tanks of > 250 l

Difficulty: easy

Difficulty: easy

For tanks of 45 cm