Eheim Flow Indicator for Professional II 2026 / 2028 / 2126 / 2128 (8000940)

The Eheim Flow Indicator (8000940) is a genuine OEM replacement flow indicator assembly designed specifically for the Eheim Professional II (2026 / 2028) and Professional IIe (2126 / 2128) external canister filters. The flow indicator is housed in the filter outlet and provides a clear visual confirmation that the filter is running and water is circulating correctly — the floating ball rises with active water flow and drops when flow stops or slows.

Over time the flow indicator assembly can wear, crack, or stop functioning correctly. Replacing with a genuine Eheim OEM part restores full visual flow monitoring so you can confirm at a glance that your filter is operating correctly at all times.

Note: This is the complete flow indicator assembly. If you only need the floating ball and cage component, order the Eheim Flow Indicator Ball and Cage Set (7480650) separately.

Key Features

• Genuine Eheim replacement part: Exact OEM fit for Professional II 2026 / 2028 and Professional IIe 2126 / 2128
• Complete flow indicator assembly: Full replacement unit — not just the ball and cage
• Visual flow confirmation: Floating ball rises with active water flow and drops when flow stops or reduces — instant at-a-glance filter status
• Early warning of flow issues: A stationary ball during operation signals a blockage, reduced flow, or filter issue — allowing prompt action before fish are affected
• Easy to replace: Straightforward component swap with no specialist tools required
• Genuine Eheim quality: Manufactured to Eheim's standards for durability and long service life

Compatibility

• Compatible with:
  • Eheim Professional II 2026
  • Eheim Professional II 2028
  • Eheim Professional IIe 2126
  • Eheim Professional IIe 2128
• Not compatible with: Other Eheim Professional or Professional II models

Product Details

• Brand: Eheim
• Product Code: 8000940
• Type: Complete Flow Indicator Assembly
• Compatibility: Eheim Professional II 2026 / 2028 / 2126 / 2128
• Quantity: 1 complete flow indicator assembly

This flow indicator is suitable for any aquarium keeper running an Eheim Professional II 2026, 2028, 2126, or 2128 external canister filter who needs to replace a worn, cracked, or non-functioning flow indicator and restore reliable visual flow monitoring.