Freshwater

For tanks of ≤ 200 l

Difficulty: easy

For tanks of 100–750 l

For tanks of ≤ 350 l

Difficulty: medium

For tanks of 25–400 l

For tanks of ≤ 200 l

15 ml

Difficulty: easy

For tanks of 200–1500 l

15 ml

Difficulty: easy

For tanks of ≤ 200 l

For tanks of < 250 l

Difficulty: easy

Power 3 W

For tanks of > 250 l

Difficulty: easy

Fits: NCO2-STAINLESSDIF-30MM, NCO2-INLINEDIFFUSER

Difficulty: medium