Eheim 1260 in sump or external?

Goodwood · 12/07/2006, 01:16 AM

Anyone got any feedback with this pump using it external compaired to in sump.

Yinger · 12/07/2006, 02:19 AM

i have a 1262 plumbed externally. Works very well, doesn't leak at all.

miatawnt2b · 12/07/2006, 10:02 AM

I run my 1250 internal. Super super quiet, no worries about leaking, and I think it's a bit better for cooling the pump.
-J

Yinger · 12/07/2006, 11:18 AM

eheims don't heat up much at all. Mine still feels cool to the touch.

jag1979 · 12/07/2006, 11:25 AM

I have two 1260's one internal one external...no problems as long as you use a BUNCH of teflon on the external

skyfireblaze · 12/07/2006, 12:34 PM

I'm assuming that the "BUNCH of teflon" is needed because you're using imperial fittings in a metric pump. The teflon is needed to help seal the differences between the threads.

manderx · 12/07/2006, 01:12 PM

Quote:

eheims don't heat up much at all. Mine still feels cool to the touch.

it feels cool because it is being cooled by the water flowing through it. even though you are running it external, it still has the disadvantages of a submersible pump.

Goodwood
if you know you are going to run external, get an external. i'd only run an eheim external if i already had it laying around.

Yinger · 12/07/2006, 01:28 PM

Quote:

Originally posted by manderx
it feels cool because it is being cooled by the water flowing through it. even though you are running it external, it still has the disadvantages of a submersible pump.

Goodwood
if you know you are going to run external, get an external. i'd only run an eheim external if i already had it laying around.

what are the disadvantages?

manderx · 12/07/2006, 01:59 PM

-transmits more heat to the water

-impeller/shaft tends to build up more calcium deposits which leads to wear/binding

-impeller/shaft are *far* less durable

-fittings aren't typically as solid

-impeller housing cover more likely to leak (simple twist-lock vs nuts+bolts)

-poorer ratings against head pressure

-tend to make a louder resonating hum that goes through walls, while with externals most of the noise is from a fan which is easier to muffle

-flimsy plastic base if anything for screwing down

Yinger · 12/07/2006, 02:21 PM

how does it transmit more heat if its running external? Internal would transmit more heat than anything. Anyways, we're talking about an eheim here, not a mag. The fittings are solid to where it doesn't leak. If anything, you can also order metric fittings for the eheim pump if your paranoid. I don't notice any performance difference running it internally or externally and I've ran both with my pump. I prefer external because it takes up less room and don't notice any resonating hum.

manderx · 12/11/2006, 01:15 PM

i was comparing to a real external, not running the same pump in/out.

EnFuego · 12/11/2006, 01:33 PM

I run an eheim 1250 and 1262 both externally and haven't had a problem with heat or leakage yet. Its only been about 2 months though. It did require a lot of teflon tape to fit the 1262 (if I remember corrctly), but still no problems.

12/07/2006, 01:16 AM	#1
Goodwood Registered Member Join Date: Jan 2006 Location: Destin, Florida Posts: 700	Eheim 1260 in sump or external? Anyone got any feedback with this pump using it external compaired to in sump.

12/07/2006, 11:25 AM	#5
jag1979 Registered Member Join Date: Aug 2006 Location: Texas Posts: 982	I have two 1260's one internal one external...no problems as long as you use a BUNCH of teflon on the external __________________ clowns, bi-color pseudo, coral beauty, yellow tang GBTA, crocea clam xenia, various polyps/zoa's, candy cane, tree leather, frogspawn, torch, various mushrooms, green/red plate, birdsnest Current Tank Info: 180 AGA, tunze 6100, 6025 and 6060, 3 x 250 mh's, 3 x 80 t5's, ASM G4+

12/07/2006, 12:34 PM	#6
skyfireblaze Registered Member Join Date: Nov 2003 Location: Albuquerque, NM Posts: 754	I'm assuming that the "BUNCH of teflon" is needed because you're using imperial fittings in a metric pump. The teflon is needed to help seal the differences between the threads. __________________ Jon Current Tank Info: 37g (24"x18"x21") - Eheim 1250 Return Pump - Deltec AP600 Skimmer - 250w MH & 2x24w T5 (Maristar) - 2 MaxiJet 1200's (for now) - Tunze Osmolator ATO

12/07/2006, 02:19 AM	#2
Yinger Premium Member Join Date: Jul 2004 Location: Yorba Linda Posts: 3,657	i have a 1262 plumbed externally. Works very well, doesn't leak at all.

12/07/2006, 10:02 AM	#3
miatawnt2b Registered Member Join Date: Jan 2001 Location: Tucson, AZ Posts: 1,467	I run my 1250 internal. Super super quiet, no worries about leaking, and I think it's a bit better for cooling the pump. -J

12/07/2006, 11:18 AM	#4
Yinger Premium Member Join Date: Jul 2004 Location: Yorba Linda Posts: 3,657	eheims don't heat up much at all. Mine still feels cool to the touch.

12/07/2006, 01:59 PM	#9
manderx Registered Member Join Date: Mar 2002 Location: Christiansburg, VA Posts: 4,893	-transmits more heat to the water -impeller/shaft tends to build up more calcium deposits which leads to wear/binding -impeller/shaft are far less durable -fittings aren't typically as solid -impeller housing cover more likely to leak (simple twist-lock vs nuts+bolts) -poorer ratings against head pressure -tend to make a louder resonating hum that goes through walls, while with externals most of the noise is from a fan which is easier to muffle -flimsy plastic base if anything for screwing down

12/07/2006, 02:21 PM	#10
Yinger Premium Member Join Date: Jul 2004 Location: Yorba Linda Posts: 3,657	how does it transmit more heat if its running external? Internal would transmit more heat than anything. Anyways, we're talking about an eheim here, not a mag. The fittings are solid to where it doesn't leak. If anything, you can also order metric fittings for the eheim pump if your paranoid. I don't notice any performance difference running it internally or externally and I've ran both with my pump. I prefer external because it takes up less room and don't notice any resonating hum.

12/11/2006, 01:15 PM	#11
manderx Registered Member Join Date: Mar 2002 Location: Christiansburg, VA Posts: 4,893	i was comparing to a real external, not running the same pump in/out.

12/11/2006, 01:33 PM	#12
EnFuego Registered Member Join Date: Oct 2004 Location: San Francisco Posts: 453	I run an eheim 1250 and 1262 both externally and haven't had a problem with heat or leakage yet. Its only been about 2 months though. It did require a lot of teflon tape to fit the 1262 (if I remember corrctly), but still no problems.