OK, I'm really confused! (Eheim pump barbs)

[redleader]

I want to build an all 1/2 in system. I was planning to use an Eheim 1048 or 1250 pump. You probably heard me say this in another thread.

Here is my confusion.

Dangerden's site says:

Eheim 1048
110/120Volt - 158 GPH
Works with 3/8" Silicon Hose

and

Eheim 1250

110/120V - 317 GHP
1 Fitting is 3/8" 1 Fitting is 1/2" (silicon hose) or 5/8" hose regular

But Eheim's site says:

1048...Centrifugal pump
Hose connection (suction side) Ø13mm (1/2")
Hose connection (pressure side) Ø13mm (1/2")

1250...Centrifugal pump
Hose connection (suction side) Ø17mm (3/4")
Hose connection (pressure side) Ø13mm (1/2")

A contradiction. So I emailed dangerden and posted in this forum hopeing to clear things up.

Dangerden tech said

It has 3/8" fittings and you would need to use adaptors like ours or some other type of fitting to convert it to a 1/2" system...

then when I pointed out Eheim's site

The fittings that come with the 1048 are barbed for 3/8". If you use our adaptors it will convert them to a 1/2" system. The adaptors are on our misc. hardware page. The barbs that come with the eheims have an o-ring so we aren't comfortable replacing them with a diffent fitting. Hope this helps.

Meanwhile GuyBFF helpfully pointed out:

The Eheim is 1/2" but Danger Den says if you use there surgical tubing it can be stretched over the fittings. Eheim also does make conversion fittings (and I don't own an eheim but from pics it looks like there threaded like the Danner, so just hit the home depot).

Perhaps I'm just a little dense, but I really am not sure if I can stick a 1048 or 1250 out of the DangerDen package into my 1/2 inch system and have no bottlenecks! DangerDen says they are 3/8 and can't be easily changed. GuyBFF says they are 1/2inch and can be easily changed. Meanwhile Eheims site says something else.

Which is it? Perhaps someone here actually owns a 1048 or 1250 and can tell me what it looks like?

[mkosem]

I own an eheim 1048, it has 1/2" barbs, I purchased it from dangerden. I am using it with my 3/8" rubber hose on the barb tho(eek!!) it works either way but the barbs are 1/2"

--MAtt

[redleader]

Thank you so much!

BTW, you have one of those jagged edge blocks with the 1048, right? IIRC, those seem to hurt flow roughly the same as the Maze2, so maybe you could tell me how the 1048 worked in your setup? I'm kinda torn bewteen the 1048 and 1250 for a low noise overclock.

[mkosem]

the 1048 is working great with a jaggededge block! it has plenty of power for it. It's most deffinitely much better than the rio180!!

--MAtt