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Old 15-06-2005, 08:26 PM
jet
 
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Option 1. Maximizes the filter's through put and the rate at which the
tank is circulated.

Option 2. What is there to prevent buffer #2 from overflowing if the
Magnum out pumps the Fluval or from emptying if the opposite is true?

Option 3. Connecting fluid pumps in series is tricky. If done correctly
the output pressure is increased although flow is not (other than from
the increased ability to overcome head). If not done correctly there is
a chance of one of the pumps either cavitating or just being forced
along by the flow. Either would reduce the effectiveness of the system.

So option 1 is your best bet.