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19-05-2004, 01:55 AM | #1 |
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Need Advise on Sump Tank
Hello everyone , need a advice on Sump tank again. Okay , supposing if my overflow tube is 20mm , for a basic sump tank with a DSB Compartment , and only 1 Return Pump with attached to a Skimmer , say Weipro 2011 , what is the recommended power for pump eg, ????l/h I am afraid that the 20mm overflow tube is small , causing the pump to empty the water in sump faster than the overflow into the sump , at the same time worry that pump not strong enough for the skimmer?
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19-05-2004, 10:42 AM | #2 |
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Join Date: Oct 2002
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20 mm = 2 cm tube? thats small ..... think u need a bigger tube
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19-05-2004, 07:37 PM | #3 |
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Hi,
I think your worry should not be sump getting emptied, I believe before that your tank already overflowed. The outflow doesnot rely on tube diameter alone, but also the head pressure at the outlet. On this I can not help to advice as it will depend on your situation. If I'm not mistaken you are using a 3' tank? That way you need about 2000L/H of water exchange after head pressure, thus before head, assuming 50% loss of flow, it will be about 4000 L/H for the circulation. If you need to divert this pump to a weipro 2011, it roughly need about 2000 L/H. Thus you need to have a pump that is 2000 + 4000 = 6000 L/H. Of course I am oversimplifying the calculation here. I am not a hydraulic expert but I am aware that the flow addition will be complicated by the use of diversion and throttling valve. I have one question for you, how is your tank drilled? Good luck. |
19-05-2004, 10:50 PM | #4 |
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ur main tk will not overflow if proper design n calculations is made.
think it would b better if u could give a really detailed one. e.g.1) tk size(both) 2) distance between the overflow pipe/box 2 the top of the main tk. 3) where u gonna place ur skimmer etc.... |
19-05-2004, 11:50 PM | #5 |
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Hi everyone , thanks.
Basically , 1)the main tank size is 30" x 18" x 18" sump tank size is 1.5ft by 1ft by 1ft 2) there is only one hole drilled 25mm on the left size bottom of tank and I have to get a pvc pipe to extend the length of the overflow pipe.(my tank overflow compartment is simlpy the pipe w/o the special overflow compartment like other tank) 3) Sump tank is basically a filter media compartment , a DSB Compartment and the return pump compartment. My idea is to connect a Weipro 2011 to the return pump , placed hanging on the main tank itself, which means that the final discharge of the water to main tank is through skimmer outlet , not the return pipe connected to return pump. Return pipe is 20mm . Can you guys advise if this is feasible? |
20-05-2004, 12:02 AM | #6 |
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r u goin 2 DIY ur sump or it has already being made 1??
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20-05-2004, 12:09 AM | #7 | |
SiaoGu Gives You Wings
Join Date: Jul 2001
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yes it will work but is yr powerhead suitable for the headloss from the sump to the skimmer?
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20-05-2004, 12:46 AM | #8 | |
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20-05-2004, 12:52 AM | #9 | |
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Didn't get what you mean...1)do you mean the return pump is not strong from Sump to Skimmer? I have not get any return pump , so perhaps for a powerhead to function the Weipro 2011 + accounting for the loss from the distance bet sump to the skimmer(hanging on main tank) , what is the estimated flow rate for pump? I think worst to worst , might as well get a cheaper pump to run the weipro 2011?What is the recommended stand alone pump rate for this case? and the rate for return pump? Please advise. |
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20-05-2004, 12:56 AM | #10 |
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never consider a bigger sump? say..2x1.5x1.5.
whichever ur decision, juz make sure 1) the vol in ur main tk(between the top of the overflow pipe and the top of the main tk) is more than the vol(water) in the last compartment of the sump. 2) the sump is able 2 hold the siphon back water from the main tk(ur setup is unlikely 2 happen). |
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