Eheim 1046
Eheim 1250
Via Aqua 1300 (Quiet with no mods)
Swiftech MCP300 (Silent with mods)
What kind of impeller shaft setup is used in the Hydor L30's? Is it like the Eheim and Via Aqua where the shaft goes all the way through the impeller and is supported on both ends, or does the impeller have a blind hole sitting on a fixed shaft anchored in the pump body like the Swiftech MCP300?
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