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Old 05-15-2009, 10:52 AM   #1
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overflow tank

Help! I just noticed this AM that one of my overflow tanks is not putting out water into the sump. There is like a yellowish hue appearing on my live rock and sand. I have adjusted the OT pipe up and down and nothing. What can I do?
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Old 05-15-2009, 11:37 AM   #2
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What kind of overflow? HOB or Internal?

Is your return pump pumping?, anything blocked in any or the line? Siphon still full (if HOB)?
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Old 05-15-2009, 12:44 PM   #3
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I have Twin Internal overflow tanks. My return pump is pumping but when I put my hand up to the return pipe in either overflow the flow is very little. It is just one overflow tank that is not outputting any water. I haven't checked for blockage yet. When I get home from work I will definitely check that. How do I determine the gph of my overflow tanks?
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Old 05-15-2009, 04:43 PM   #4
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Unhappy overflow tanks

I have researched and found out that my overflow tanks on my 125 gal All Glass Aquarium put out 1200 gph. What size return pump should I be using for this gph?
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Old 05-16-2009, 09:19 AM   #5
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overflow tank

Came home from work yesterday and immediately started to work on the overflow tank that is not outputting water. Stuck a smaller PVC pipe through the flexible hose connected to the output portion of overflow, stuck my hand in OT to take out any accumulation that could be blocking it, pumped the adjustable drain pipe a few times, just a little trickle comes out. What more can I do?
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Old 05-16-2009, 09:42 AM   #6
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What pump are you using?
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Old 05-16-2009, 11:23 AM   #7
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Either you have a blockage or your pump is going bad. Did you buy union connections? If you cant solve this issue sticking something down the pipe, your going to have to end up makin a slight mess and cutting it. Got a ball valve or any other connectors?
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Old 05-16-2009, 02:30 PM   #8
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I have a Model 7 utility pump, 115 volts A.C., 60Hz/65 watt, 1.5 amp in sump now. I have a working AquaMedics Ocean Runner OR2500, 650gph pump on hand. Should I replace my Model 7 with the OR?
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Old 05-16-2009, 02:33 PM   #9
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Excuse me for being a novice, when you say union connections, what is that? Is that a connection to help take the adjustable drain pipe out so I can see if anything is blocking the drain pipe base?
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Old 05-16-2009, 06:08 PM   #10
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If your tank in not level the lower overflow will take most of the flow. You could try tunning off your pump and pouring water down the overflow in question, to test the water flow. Maybe a photo would help.
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