Dolphin 385 vs Eheim 1048

kusojiji · Jan 16, 2004

I ran a similar test that someone else did with the eheim vs mag (?).

Here's the eheim 1048.

kusojiji · Jan 16, 2004

Here's the dolphin 385.

kusojiji · Jan 16, 2004

Here's the 3/4 inch hose on the eheim. I just removed the suction barb and slid the hose on. I did this to try to minimize suction loss and equal the playing field between the two pumps.

I also refitted the eheim discharge barb with a larger inner diameter barb than what came with the pump.

kusojiji · Jan 16, 2004

First up is the eheim. The first shot is the setup. Second is the water discharge at pump level and the next is at about 2 ft head.

kusojiji · Jan 16, 2004

kusojiji · Jan 16, 2004

and last

kusojiji · Jan 16, 2004

Next up is the dolphin 385. This one takes 3/4 inch suction and 1/2 inch discharge. It can do 3/4 inch, but that would be much for an in-case system.

First shot is setup.

kusojiji · Jan 16, 2004

Next is discharge at pump level.

kusojiji · Jan 16, 2004

and last is at 2 ft head.

kusojiji · Jan 16, 2004

Next series is the pressure comparison. The first shot is the dolphin at 2 ft head. notice how far the water reaches.

kusojiji · Jan 16, 2004

and the eheim at 2 ft head. I had the hose outlet at level and at the same point for both pumps.

kusojiji · Jan 16, 2004

As for the noise, the eheim is noticably quieter.

I have a tiny, 2 second mpg in the zip file. Hope this works.

Eheim first.

This was done in my shower/bathroom and is tiled all around so the noise just echos all around and is amplified, so bear that in mind.

kusojiji · Jan 16, 2004

Next up is the dolphin. You can hear the impeller rattling. I may try the via fix and glue the impeller to the magnet. mine isn't loose though.

kusojiji · Jan 16, 2004

That's it. sorry for being kinda long, but I don't know how to add two pictures to a frame in this forum.

MoreGooder · Jan 16, 2004

Does the Dolphin's rattle occur when water is flowing? Or just when running dry?

Soja · Jan 16, 2004

Don't you want the water to shoot straight up? Maybe both clamped/tied down next to one another going at the same time?

kusojiji · Jan 17, 2004

the dolphin rattles when running normally. My other one quieted down when I glued the impeller. this one's impeller is not loose, but it still rattles.

As for running together, what would that do?

Soja · Jan 17, 2004

Easier to compare.

kusojiji · Jan 17, 2004

Yeah, would have been easier to see. Unfortunately, that's about all the spare hose that I had left!

Also, I don't think my faucet would have been able to keep up with the two pumps working together. It was having a hard time with the dolphin.

Did the mov files in the zips work okay?

MoreGooder · Jan 17, 2004

kusojiji said:
Yeah, would have been easier to see. Unfortunately, that's about all the spare hose that I had left!

Also, I don't think my faucet would have been able to keep up with the two pumps working together. It was having a hard time with the dolphin.

Did the mov files in the zips work okay?

Yes! The mov files were great!

Dolphin 385 vs Eheim 1048

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