Internal return pump with no restart issues?

about 12" in sump. stand 36" tall. tank 24". 2-3/4" returns so will use a Y from pump. then a elbow thru 3/4" bulkheads thru lockline into tank.

soooo- 2+2=4, plus how much off for the Y, 2 elbows and lockline? Maybe less than I thought? Using to large of a margine of error maybe.
 
I am using the ATB Flowstar 1500,has been running for 1yr.with no issues.Compact,fairly low wattage,very quiet-I recommend it
 
sjm817 said:
Yes ATB Flowstar and Red Dragons are the same pumps. BTW, how are you calculating the 7' head? Be sure to include your sump water height in the calculation. You calculate from the top of the water level in the return section, not the bottom of the sump. If you have 12" of water in the return section of the sump, that counts as 1' less head.
Click to expand...

wow, the Flowstar is much cheaper.
 
pmrossetti said:
about 12" in sump. stand 36" tall. tank 24". 2-3/4" returns so will use a Y from pump. then a elbow thru 3/4" bulkheads thru lockline into tank.

soooo- 2+2=4, plus how much off for the Y, 2 elbows and lockline? Maybe less than I thought? Using to large of a margine of error maybe.
Click to expand...

@ 4' of head, the Eheim 1262 would deliver about 600gph which is plenty IMHO.

If you must have more flow, use 2 Eheim pumps at a lesser flow and scrap the Y connector. Opens up a few more options this way also. Cheers.
 
Number one goal with any return pump is keep it clean - and most will start everytime -- I had a mag 5 return or years never cleaned it but when it stopped I had to bang it to get it started again until I cleaned it -- keep em clean and that's over half the battle
 
myfrostymember said:
Number one goal with any return pump is keep it clean - and most will start everytime -- I had a mag 5 return or years never cleaned it but when it stopped I had to bang it to get it started again until I cleaned it -- keep em clean and that's over half the battle
Click to expand...

Not totally true. Many pumps have difficulty restarting, clean or not. Even new ones.
 
Midnightsun said:
@ 4' of head, the Eheim 1262 would deliver about 600gph which is plenty IMHO.

If you must have more flow, use 2 Eheim pumps at a lesser flow and scrap the Y connector. Opens up a few more options this way also. Cheers.
Click to expand...

I have a 125 with probably a 50 gallon sump. I run two 1260 eheim pumps in the sump temporarily for flow but after finding a couple used vortechs, i'm seriously thinking about taking one offline.

While I really loved the water movement with both online, with one, it's quieter, uses less power, probably manages flow through the skimmer and fuge better.
 
jcw said:
I have a 125 with probably a 50 gallon sump. I run two 1260 eheim pumps in the sump temporarily for flow but after finding a couple used vortechs, i'm seriously thinking about taking one offline.

While I really loved the water movement with both online, with one, it's quieter, uses less power, probably manages flow through the skimmer and fuge better.
Click to expand...

Thanks,Agreed, but my tank is twice as big. I'd love to go Eheim, but I'm not sure it gives me 3x turnover.
 
Not that much. I would say a few inches worth of head at most and even that is more than actual. Regardless, plenty of flow.
 
Midnightsun said:
Not that much. I would say a few inches worth of head at most and even that is more than actual. Regardless, plenty of flow.
Click to expand...


Thanks M, It's between the WB at 60watts and the Eheim at 80watts. Leaning Eheim. Will see what my WB thread ? produces.
thanks again :beer:
 
flowstar 1500, its compact (2.5" shorter and much less massive), uses 10w more than the eheim 1262 but pushes 600gph more

(its really just a laguna pond pump, outer housing removed with a union fitting on the output) you pay $40 or so more for the ATB than the pond version from laguna, figure the cost of removing the housing, adding on stand and the union and its not that bad of a deal.

replacement impellers are the same cost as the eheim ($55-60)
 
Pmr - you have 7' minimum. You have a 36" stand with your pumpresting on the bottom of the sump correct? So if we start at the output of the pump you already have close too if not 2.5'. Then you have the 2' to get to the top of the tank. If you use a Y (hard to find in smaller sizes) then that should only add a tiny amount of head compaired to a tee which will be like using a 90* and count for 1' plus your other 90*s each count for 1'. I am not sure where SJM found this info to subtract 1' because the return section has 12" of water in it. This would actually be more likely to be counted as an additional head amount since the pressure increases the farther down the water column you go and your pump will be at the bottom not at the top.
 
evsalty said:
Pmr - you have 7' minimum. You have a 36" stand with your pumpresting on the bottom of the sump correct? So if we start at the output of the pump you already have close too if not 2.5'. Then you have the 2' to get to the top of the tank. If you use a Y (hard to find in smaller sizes) then that should only add a tiny amount of head compaired to a tee which will be like using a 90* and count for 1' plus your other 90*s each count for 1'. I am not sure where SJM found this info to subtract 1' because the return section has 12" of water in it. This would actually be more likely to be counted as an additional head amount since the pressure increases the farther down the water column you go and your pump will be at the bottom not at the top.
Click to expand...


Thank you, but now I'm really confused.:confused: So I have 7' of headloss? Correct?
 
pmrossetti said:
Thank you, but now I'm really confused.:confused: So I have 7' of headloss? Correct?
Click to expand...


That previous post saying 7' is incorrect. You were correct in your calcs at 4' of head.

Let me put it this way. If your tank hight is 7' high to top of water level and you build a really tall sump of lets say 7' high then head pressure is 0. Does that makes things clearer?
 
You start at the top of the sump return level. Lets say 12" as an example. 2' for the rest of the stand, 2' for the tank and you have 4' vertical. Fittings and Ys and such maybe 1' more. So maybe 5' or so. I think an Eheim 1262 would work just fine, but if you want more flow, there are options. Personally, I dont see the ATB version of the Askoll 1500 being worth an extra $60 for a union fitting and a red base plate, but thats me. The WB is another good option as is a Sicce Syncra 5.0. The Eheim out of any of them have a known long term reliability record. The Askolls are very nice and super quiet. The WB are kind of new so long term has yet to be seen. Same with the Sicce.
 
Midnightsun said:
That previous post saying 7' is incorrect. You were correct in your calcs at 4' of head.

Let me put it this way. If your tank hight is 7' high to top of water level and you build a really tall sump of lets say 7' high then head pressure is 0. Does that makes things clearer?
Click to expand...


But the pump is pumping from the bottom of the sump, not the top, right?:confused:
And I seem to remember reading that elbows add a good amount of head.
 
pmrossetti said:
But the pump is pumping from the bottom of the sump, not the top, right?:confused:
And I seem to remember reading that elbows add a good amount of head.
Click to expand...
I think you posted same time I did. You start from the top of the water level in the return section of the sump. Not from the bottom.
 
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