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4 models compared
Powerheads and Wavemakers
Our pick EHEIM streamON+ 3500
Why: Its 3,500 l/h flow rating and adjustable output let you set the circulation strength within that model’s range.34 The magnetic holder and adjustable outlet let you position the pump and aim its flow.4 Its stated power draw is 2.5 W, against 6 W for the 6500 and 12 W for the 9500.3
14 models compared
Return Pumps
Our pick EHEIM universal 300
Why: Its ratings are 300 L/h maximum flow and 1.2 m maximum head. Check the flow curve at your actual lift before choosing it for a small return circuit.5 It supports submerged or external installation, so you can place it where your sump and plumbing allow.6
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