Owning an Eheim Classic is a very rewarding experience; especially for your fish! In order to keep your filter working at peak performance and your aquarium inhabitants healthy please follow the guidelines below.

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• Chemi-Pure - change every 1 -2 months depending on bio-load

• Standard Carbon - change monthly

• Synth - change monthly

• Substrat - rinse with aquarium water every 3 months, more often as necessary.

• Coarse Blue Filter Pad - rinse every 3 months, more often as necessary. Replace as needed.

• Mech - rinse every 3 months, more often as necessary.

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