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Old 05-16-2009, 07:37 PM   #11
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The above suggestion seems like a good way to start troubleshooting.

The union connection mentioned above is similar to what you see on a garden hose, just a way to connect and disconnect the pipe via a threaded fitting rather than glue to connect and hacksaw to disconnect

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Old 05-17-2009, 11:07 AM   #12
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Okay, I did what you suggested. Shut off the return pump, fed water down the OT in question. A nice steady flow of water came out. I think that my pump is not big enough to handle the return of water. I have an AquaMedic Ocean Runner 2500 that outputs 650gph. My OT's put out 1200gph, total (600gph each). Can I use the OR2500 as my return pump?

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Old 05-17-2009, 06:07 PM   #13
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If 650 gph is sufficient for the tank's filtration needs, then that pump should be fine. The cause of reduced flow is almost certainly what was suggested on the previous page - one of your overflows sits slightly lower than the other, so it is receiving more flow. You could correct that by adjusting its height, or remove it since one overflow has proven capable of handling the flow from the pump, or by adding another pump to raise the total flow rate.

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flow, overflow, tan

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