Not very economical

Not very economical

Tetra - 151598 - Aquarium Filter Cartridges EasyCrystal - Filter Pack C250 / 300 with Coal (Miscellaneous)
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Customer Review

Not very economical, it is necessary to change the filter more than once a month ...
In addition, activated carbon granules come out, that can be dangerous for our small animals if they come to swallow ...
Otherwise, pretty effective one week.

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