Wat flowing rate

[happyguy1682]

My 4,2,2 tank is coming next week n my sump rank is 3ft

So wat kind of flowing rate of pump should i get to pump the water back into the tank ???

[tunicate]

Total flow(i.e. return + wave makers) can be anywhere between 5800 to 17,000L/hr depending what you're planning to keep. This is just the rough guide.

P.S. remember to factor in the head loss of the return pump.

[happyguy1682]

bro............... wat u mean by (P.S. remember to factor in the head loss of the return pump)

i dun really get it

[tunicate]

Above is a chart I borrowed from Aquabee pump. The 3 colored lines shows 3 of their pump models.

Firstly, the pump sucks water in from one hole(i.e. inlet) & pushes the water out the outlet.

The horizontal line from the above chart shows that pump UP6000 can push water at a rate of 6000 liters per hour(l/h). But if you were attach a pipe to the pump outlet & point it upwards, the water flow is going to start slowing down because it has to 'fight' gravity. Hence, the longer the vertical pipe, the slower will be the water, until it totally stops flowing. For UP6000, the chart shows that its flow rate stops (i.e. 0 l/h) at a height of 5 meters.

In a typical display tank & sump setup, you sump usually sits below the main display tank. Thus requiring the return pump to push water upwards back into the display tank. The height is typically about 1.5 meter. So if you're using UP6000 as your return pump, at 1.5 meter, you should be getting a flow rate of about 5000 l/h. This 1000 l/h of water flow missing is the head loss.

In addition, if you have a few piping elbows along the way to reach the main display tank, the flow would reduce a little more.

Hope the explanation is clear enough.

[happyguy1682]

so mayb i should get a 6000l/h pump mayb is better , so i can have more stronger wave

[yongshun]

usually the return pump rate is at least 10x your total water volume. my 2 cents

[happyguy1682]

but how to count ???

my tank is 4,2,2 ????

can u u help me

[tunicate]

Aiyoo bro, I counted for you already mah. In my earlier reply, I said between 5800 to 17,000L/hr.

Main display tank 4x2x2 = 450 L

sump tank 3x1.5x1.5 = 130L

Total volume = 450+130 = 580 L

10x of total volume = 580L x 10 = 5800 L

So 5800 L/hr is probably ok, if you're planning for a fowlr tank.

And if it's gonna be an SPS tank, you can even increase to 17,000 L/hr (which is 30x).

But remember, we're talking about total flow, not just return pump flow.

Example,

Using Aquabee3000 for return pump, you get about 1,500 L/hr after minus head loss.

You also install 2x Hydor Koralia2 wave maker(each with flow of 2,300 L/hr).

Total flow = 1500+2300+2300 = 6,100 L/hr

Which is quite ok for a fowlr tank.

[happyguy1682]

hee hee sorry sorry my english no gd lei.............. now i understand liao

[Slimymadness]

Bro happyguy do u know how bro tunicate arrives at 4.2.2=450l?

Primary sch formula - volume = length x breadth x height

No offence but bro u gotta do some thinking/ reading/googling urself and not hoping to get spoonfed! Read the new to marine section!

[xaine]

Yeah, I was about to mention too much spoon-feeding, alot of information is just a click away.

[CFOh]

but how to count ???

my tank is 4,2,2 ????

can u u help me

try this link for Cubic Inches to Liters Conversion...

http://www.metric-conversions.org/volume/cubic-inches-to-liters.htm

Below show step by step notation:

note* 1ft =12inches

4ft x 2 ft x 2ft = 48inches x 24inches x 24inches = 27648in^3

feed 27648Cubic Inches in above link and press GO to get answer or calculate via below conversion.

1 cubic inch = 0.016387064 liter

27648 * 0.016387064 = 453.0695 liter.

therefore,

4ft x 2 ft x 2ft = 453.0695 liter.

Cheers...

Edited March 25, 2011 by CFOh
adding

[happyguy1682]

I'm not gd in computer tats y..... Nvm i try to find myself thanks everyone

[les71]

Above is a chart I borrowed from Aquabee pump. The 3 colored lines shows 3 of their pump models.

Firstly, the pump sucks water in from one hole(i.e. inlet) & pushes the water out the outlet.

The horizontal line from the above chart shows that pump UP6000 can push water at a rate of 6000 liters per hour(l/h). But if you were attach a pipe to the pump outlet & point it upwards, the water flow is going to start slowing down because it has to 'fight' gravity. Hence, the longer the vertical pipe, the slower will be the water, until it totally stops flowing. For UP6000, the chart shows that its flow rate stops (i.e. 0 l/h) at a height of 5 meters.

In a typical display tank & sump setup, you sump usually sits below the main display tank. Thus requiring the return pump to push water upwards back into the display tank. The height is typically about 1.5 meter. So if you're using UP6000 as your return pump, at 1.5 meter, you should be getting a flow rate of about 5000 l/h. This 1000 l/h of water flow missing is the head loss.

In addition, if you have a few piping elbows along the way to reach the main display tank, the flow would reduce a little more.

Hope the explanation is clear enough.

i m new to this oso,so pls gave me some pointer pls,so m i right to say that beside the flow rate,the pump use to direct to the sump must not be greater than the pump to the main tank,right?

example if i get a (6000L/HR pump for output to main tank),than i can only get a (4000L/HR pump for the input to sump tank),n in this case the more flowrate the merrier?

[tunicate]

No pump should be used to get water from main tank to sump. Instead, the water in main tank fills up & overflows into piping that exits into sump via gravity. In its simplest form, the water flowing from sump to main tank back to sump is all handled by a single return pump sitting in the sump area.

Do take some time to read up on the 'Members Tank & Specs' section of this forum on how others set up their tanks & sump. There're more details under this topic.

[les71]

No pump should be used to get water from main tank to sump. Instead, the water in main tank fills up & overflows into piping that exits into sump via gravity. In its simplest form, the water flowing from sump to main tank back to sump is all handled by a single return pump sitting in the sump area.

Do take some time to read up on the 'Members Tank & Specs' section of this forum on how others set up their tanks & sump. There're more details under this topic.

because i already have a 3ft by 1.5ft by 2ft fowlr tank n i m using all those overhook tube for my filter n skimmer,which i hook in at the back of the tank, but now decide to build a sump tank, so there is no way i would use the gravity if the main tank got no outlet tube to sump,so wat can i do?

[tunicate]

You have 2 options:

(1) Drill your tank to make an overflow box(probably need to engage a tank maker to do this for you)

(2) Buy an overflow box.

Samples of (2) below:

Below is a good illustration:

http://www.melevsreef.com/what_sump.html

[les71]

You have 2 options:

(1) Drill your tank to make an overflow box(probably need to engage a tank maker to do this for you)

(2) Buy an overflow box.

Samples of (2) below:

Below is a good illustration:

http://www.melevsreef.com/what_sump.html

[

thank for the help,n i saw the diagram of the sump,but sorry for my ignorant,cos some time back i do see some1 build a filter ;sump tank with a two pump in, 1 for inlet n 1 for outlet,why is it so?or is it i rem wrongly,or is it only suitable oni for freshwater?or maybe i rem wrongly.:}