plumbing and return pumps...

[YLChik]

ok this seems like a DUMB question but how did an external pump heat the water? I thought that was a benifit of having them....

[YLChik]

after a VERY small amount of digging I have found these.....

external-
Gen X PCX- 40 would be 503 gh with a 3/4 return
cost 140.00

External Blue line velocity T4
at 3/4 return 448gph
160.00


Mag 12
internal
3/4 return 405gph
120.00

Quiet one 4000HH
internal
3/4 return 358 gph
98.00

rio 4100
internal
380 gph
115.00

What else ya got?

[crvz]

If the pump creates enough heat to heat the other parts other than just the motor, there's your heat transfer. I think the idea is that the motor is separated from the impeller (some even have fans built in, I think), but if it doesnt disipate well, or if there's a lot of load on it (which is typical in the case of using a skimmer), they can still heat up pretty well.

[crvz]

Originally Posted by YLChik

What else ya got?

my opinion, throw the quiet one and rio out. I've heard quiet ones are anything but, and Rios have not-so-good a reputation. Consider the eheim 1262, though not as cheap. Awesome pumps if you go internal.

[DarthOcellaris]

Originally Posted by YLChik

after a VERY small amount of digging I have found these.....

external-
Gen X PCX- 40 would be 503 gh with a 3/4 return
cost 140.00

External Blue line velocity T4
at 3/4 return 448gph
160.00


Mag 12
internal
3/4 return 405gph
120.00

Quiet one 4000HH
internal
3/4 return 358 gph
98.00

rio 4100
internal
380 gph
115.00

What else ya got?

I wouldn't use RIO

[crvz]

Originally Posted by YLChik

Mag 12
internal
3/4 return 405gph
120.00

See, here's where I get conflicting reports. I've had great succes opening my return on Mag pumps to twice what's at the output. Basically, you screw a bushing onto the 3/4" output and now you've got a 1.5" PVC output on the pump. By doing so, you're going to gain 50% or more flow than advertised. I've experienced it on my mag 12 and mag 9.5, so there's something to think about. I don't know how that translates to other pumps, though, as I've only run mag drives.

[YLChik]

I have a MAg 3 on both tanks, plus a mag 7 sitting in the basement
why not stick with what I know

[DarthOcellaris]

according to everything I've read, a Mag 12 has 1200 gph ( @ 0 head )...are your numbers counting the head loss Amy?

[YLChik]

Originally Posted by DarthOcellaris

according to everything I've read, a Mag 12 has 1200 gph ( @ 0 head )...are your numbers counting the head loss Amy?

yup I did it off the rc caluclator in your link

[DarthOcellaris]

Originally Posted by YLChik

yup I did it off the rc caluclator in your link

sweet...I just was making sure you didn't have the wrong #'s

[YLChik]

oops that was the mag 18 thanks Andy!

[ScruffyRubicon]

Originally Posted by crvz

If the pump creates enough heat to heat the other parts other than just the motor, there's your heat transfer. I think the idea is that the motor is separated from the impeller (some even have fans built in, I think), but if it doesnt disipate well, or if there's a lot of load on it (which is typical in the case of using a skimmer), they can still heat up pretty well.

I do plan on going all externals once I move.

[YLChik]

I like comfort sometimes... stick with what ya know

So for the on going planning state I am gonna go with the mag 18.

So now we have water going down and water going up....

how about water from frag tank to sump... room wise and cost wise i think that the frag tank will be infront of the sump....

how does this part of the set up work and should I start another thread?!

[Wiskey]

Are you talking about going from the sump, through the frag tank, then up to the main tank? How do you plan to accomplish that?

I would do it like this,.. Either one huge return pump that T's off some to the frag tank and some to the main tank, then both have drains going into the drain side of the sump.

Or, better yet, one small return pump (mag 5 or something) to the frag tank, and bigger return pump for the main tank upstairs,.. once again both draining to the skimmer side of the sump.

I would also recommend against the mag 18 for a return.

Whiskey

[YLChik]

whiskey,

I was going to have the main tank drain to the frag tank and then drain to the sump so that no extra pumps were involved... just gravity... yes I know it's "dirty" water going into the frag tank but it's simple.

why do you reccomend against the mag 18?