How to size return pump

[kzeller]

Here is a headloss calculator the will allow you to select several different pump options, even if it does not list a specific pump you are looking for still input all the info and it will give you the headloss of your exact set-up.
http://www.reefcentral.com/index.php/head-loss-calculator


FYI, there are other calculators listed on the RC homepage that you may also find helpful.

What is this calculator referring to when it asks pipe entrance/exits

 

[SeattleReefer]

How does this work if I don't plan to run a controller right away or are you saying that the pump has its own controller?

the Jaebo pump has it's own included controller.

looks like a no brainer to me

Jaebo DCT8000- $87
68 watts
2113GPH
max head 14.8ft
included controller with 10 speed settings
can be integrated to Neptune with added accessory adaptor
Jaebo also has a slow start feature and run dry protection- not sure about eheim


Eheim 1262 - $190
80 watts
900GPH
max head 11'6"
no controller, no speed selection, no neptune adaptor

 

[billdogg]

the Jaebo pump has it's own included controller.

looks like a no brainer to me

Jaebo DCT8000- $87
68 watts
2113GPH
max head 14.8ft
included controller with 10 speed settings
can be integrated to Neptune with added accessory adaptor
Jaebo also has a slow start feature and run dry protection- not sure about eheim

And less than well proven track record on longevity, so how many times will you replace it?


Eheim 1262 - $190
80 watts
900GPH
max head 11'6"
no controller, no speed selection, no neptune adaptor

Can be easily adjusted with a ball or gate valve (and reduce energy consumption at the same time), track record for longevity better than any I am aware of.



I prefer to buy once even if it might cost a bit more rather than buy repeatedly because it has broken down again.

jm.02

 

[kzeller]

the Jaebo pump has it's own included controller.

looks like a no brainer to me

Jaebo DCT8000- $87
68 watts
2113GPH
max head 14.8ft
included controller with 10 speed settings
can be integrated to Neptune with added accessory adaptor
Jaebo also has a slow start feature and run dry protection- not sure about eheim


Eheim 1262 - $190
80 watts
900GPH
max head 11'6"
no controller, no speed selection, no neptune adaptor

So to clarify. The 10 speeds that are "pre programmed". What if I need to be at 7.5 and there is only 7 and 8, use a gate valve to fine tune? do you have one of these yourself? Is this as reliable as the Eheim and as quiet? Im totally ok with spending more $$$ for a better, quieter unit....

 

[kzeller]

Can be easily adjusted with a ball or gate valve (and reduce energy consumption at the same time), track record for longevity better than any I am aware of.



I prefer to buy once even if it might cost a bit more rather than buy repeatedly because it has broken down again.

jm.02

this is exactly how I feel....thank you billdogg

 

[Potatohead]

I would use something more in the 500 GPH range which will be more like 350 at 4' or so. I have a Tunze 1073.02 on my 36 bow and it's too big, I have it throttle back about halfway. Would probably be perfect for a 46.

 

[kzeller]

I would use something more in the 500 GPH range which will be more like 350 at 4' or so. I have a Tunze 1073.02 on my 36 bow and it's too big, I have it throttle back about halfway. Would probably be perfect for a 46.

I am going big knowing that I plan to set up a 120 in the future so I am get some of the equipment that I know that I can use for this even if I have to run them at 1/4 of their capacities...

 

[SeattleReefer]

Can be easily adjusted with a ball or gate valve (and reduce energy consumption at the same time), track record for longevity better than any I am aware of.



I prefer to buy once even if it might cost a bit more rather than buy repeatedly because it has broken down again.

jm.02

each to his own, but your post contains several inaccuracies.

-restricting flow via valve does NOT reduce electrical consumption.

- you can buy two Jaebo pumps for the price of a single eheim. Put one on the shelf if you need piece of mind.

- the cost of running these pumps adds up. At Seattle electrical rates the eheim=$70/yr but the Jaebo running at half capacity (same volume flow)= $33/yr

so, to summarize, the eheim costs twice as much initially, and twice as much to run. Some bargain.

 

[SeattleReefer]

So to clarify. The 10 speeds that are "pre programmed". What if I need to be at 7.5 and there is only 7 and 8, use a gate valve to fine tune? do you have one of these yourself? Is this as reliable as the Eheim and as quiet? Im totally ok with spending more $$$ for a better, quieter unit....

the ten speeds roughly correspond to 10%, 20%, etc. Yes they are pre-programmed. I highly doubt that you need 7.5 and neither 7 nor 8 will do, but if that's the case then you can program in 1% increments via Jaebo--> neptune adaptor (you DO plan to get a controller eventually, right?)

reliable? that's always a matter of luck and/or maintenance. IMHO the pumps fail when they are not maintained. That applies equally to eheim or jaebo.

quiet? VERY quiet. I run the DCT15000 at approximately 2500gph and the pump is much quieter than any other component in the system.

 

[ThaBeast]

the Jaebo pump has it's own included controller.



looks like a no brainer to me



Jaebo DCT8000- $87

68 watts

2113GPH

max head 14.8ft

included controller with 10 speed settings

can be integrated to Neptune with added accessory adaptor

Jaebo also has a slow start feature and run dry protection- not sure about eheim





Eheim 1262 - $190

80 watts

900GPH

max head 11'6"

no controller, no speed selection, no neptune adaptor

Google fire caused by Jaebo before making your choice.

 

[SeattleReefer]

Google fire caused by Jaebo before making your choice.

that search returned one possible fire. (first page results)

the same search for eheim returns three possible fires (heh- all three results posted by the same guy on different forums, so I guess one potential unverified fire)

 

[ThaBeast]

How to size return pump

First page results for jebao--Two fires related to ac converter, one in Richmond va area and one in Dallas tx area. Two others I didn't bother to click on. Eheims run for years, you will be lucky to get more than a year out of that cheap pump. I have a problem with cheap equipment so I'll be quiet now.

 

[A sea K]

What is this calculator referring to when it asks pipe entrance/exits

Pipe exits will be how many nozzles on the return exit, not exactly sure on the entrance but I would have to assume 1 on most any system unless using a complex setup with more than one DT or frag tank plumbed to the same pump.

 

[eznet2u]

-restricting flow via valve does NOT reduce electrical consumption.

You might want to check your facts a little better.

Savings
Installing throttling controls can save 5"“25% of pump or fan energy use.
Power is proportional to the third power of flow rate. Throttling reduces flow rate, which results in lower power consumption.
To calculate the annual energy savings for installing/using throttling controls, the following equation can be used to determine the order of magnitude of savings:
kWh Savings = Rated Motor kW * (flow rate_new / flow rate_old)³


http://www.seai.ie/EnergyMAP/Energy...put_in_place_of_constant_flow_operation1.html

Basic Engineering/Plumbing.

 

[SFish]

It also depends on if you use PVC on the return pump. Then the PVC diameter comes into play vs the output size of the pump. Also if you use 90s or Ts that will effect the flow of the pump. It's not as simple as look up the height the water has to go up.

 

[SFish]

Pipe exits will be how many nozzles on the return exit, not exactly sure on the entrance but I would have to assume 1 on most any system unless using a complex setup with more than one DT or frag tank plumbed to the same pump.

Some people have the return / water from the over flow go to the left and right side of the sump and put the return in the middle.

 

[kzeller]

So I am definitely intrigued by this controllable dc pump idea. Jebao probably isn't gonna be the one I get as there seems to be to many red flags. Eheim doesn't have one unless I'm just special and can't find one. Does anyone have a controllable pump that they recommend? Other than the jebao?

Sent from my SM-G900V using Tapatalk

 

[madweazl]

Can be easily adjusted with a ball or gate valve (and reduce energy consumption at the same time), track record for longevity better than any I am aware of.



I prefer to buy once even if it might cost a bit more rather than buy repeatedly because it has broken down again.

jm.02

Restricting the output with a valve will not reduce power consumption (usually the opposite).

As for reliability, there is no comparison between the two pumps; ehiem reliability is legendary. The other is a knock off design and doesnt use the highest quality parts as one might imagine.

 

[billdogg]

You might want to check your facts a little better.

Savings
Installing throttling controls can save 5"“25% of pump or fan energy use.
Power is proportional to the third power of flow rate. Throttling reduces flow rate, which results in lower power consumption.
To calculate the annual energy savings for installing/using throttling controls, the following equation can be used to determine the order of magnitude of savings:
kWh Savings = Rated Motor kW * (flow rate_new / flow rate_old)³


http://www.seai.ie/EnergyMAP/Energy...put_in_place_of_constant_flow_operation1.html

Basic Engineering/Plumbing.

Restricting the output with a valve will not reduce power consumption (usually the opposite).

Didja not see (or choose to ignore) this post?

 

[A sea K]

Some people have the return / water from the over flow go to the left and right side of the sump and put the return in the middle.

Not real sure where your going with this but the "return" is simply the return to the tank from the circulation pump, at least that has always been my understanding.