Coarse, Medium then Fine
That way the dirt particles in water will be filtered out using a graded system which will be most effective and will increase intervals between maintenance.
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Reviewer: Klaus winther Denmark
Got biohome ultimate and foams set up in all my cannisterfilters just like Richard shows in the videos. Startet out with one as i was a bit sceptical but it just works like a dream. I used to do waterchange every week but after a startet up with biohome ultimate i only need to change water like every 5 to 6 weeks.
Thanx Richard for a super product.