FLUVAL FX6 - for aquariums up to 1500L. FLUVAL FX4 / FX6 FLUVAL FX4 - for aquariums up to 1000L. FLUVAL 107 - for aquariums up to 100L. FLUVAL 207 - for aquariums up to 200L. FLUVAL 307 - for aquariums up to 300L.
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