It also makes for very straightforward, simple maintenance when trimming your aquascape as once the moss is established; it is very easy to see where you need to trim from and what to trim down. These may also be beneficial for those who do not opt for a HMF filter with their shrimp or fish fry - the walls create a great sanctuary for the shrimplets/fry as well as being a decent source to graze natural foods from.
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