Swirl Steins with Koralia 4 Mods

[dngspot]

I have had these running for just over 24 hours and the flow is terrific. The pumps on the end of the Swirl Steins are a set of mod’ed Koralia 4’s, I am way impressed on their flow alone. I have the complete build thread at my local site. They are inspired from an old thread on RC. The build thread is pic intense and the instructions are clear.

Swirl Stein Build
http://wichitaaquariumclub.com/forum...?threadid=1361

Koralia Mods
http://wichitaaquariumclub.com/forum...ead.php?t=1394







The items on top of the box are the arm and ring for the second box.

[dngspot]

Along with the mods I did with the old units I have done more. I have removed the grey pvc and installed clear 3/4 inch O.D. acrylic tube. I was going through my stuff and remembered that I had a solid piece of 3/4 inch acrylic rod. The bearings that I am using are 3/4 inch I.D. This allows me to do minimal machine work. The problem with the rod is, I want to pass the cord through the tube. Then it came to me that I have about 4 feet of the tube that I used for my calcium reactor bubble counter. It turns out it was pretty close to 3/4 O.D. but just a bit too big for the I.D. of the bearing. So I took my dremmel, with a sanding drum, to it and with a little work I was able to fit the bearing snugly to the tube. It looked a little rough so off to work and I cut them smoothly on the lathe. If I did not have it I would have just used the dremmel, the portion that is machined is covered anyway.
I also removed the pivoting knuckle; we kept the K-4's pointed up about 5 degrees to keep the sand from blowing around. Off I went to the miter saw, and I cut 5 degrees to the bottom of the tube.
The first one is up and running, what a difference. They are much smoother and cleaner looking. I am very happy.
Here they are.

[VWD]

Pretty cool, Any way you can do a video of them working Dave?

[D.J.]

now that is pretty cool.......i was wanting to do something like that in my new tank but had no idea how to make them do that......

the vid may be grainy but it gets the job done.......

do you remember the vendor you bought them motors from?

[dngspot]

I bought them from Ebay. Here is the most recent link.
http://cgi.ebay.com/5304448488-Micro...3286.m20.l1116