automatic water change

It is 2 pumps. That's what you need.
Unscrew the 4 screws on the pump head and the heads of the pumps come off and you can stack them on top of each other.

You will need to get longer screws or some #8 32 all thread and wing nuts to secure the heads now.

Sacohen between you and dread240- that would make sense. One motor running 2 heads. Thats the goal.

So its ONE pump running two heads.

I prefer to call it one motor running two pumps but i think we understand each other.
 
Sacohen between you and dread240- that would make sense. One motor running 2 heads. Thats the goal.

So its ONE pump running two heads.

I prefer to call it one motor running two pumps but i think we understand each other.

Exactly.

Just like this picture.

muqe5aqu_zps8f90c051.jpg
 
I prefer to call it one motor running two pumps but i think we understand each other.

That would be the proper technical terminology which is why it's exactly what I said :-P

Saco what tubing did you go with? I went with some clear tygon tubing that was the softest I could find in 3/32 wall 1/4 ID
 
If you can, I would recommend John Guest fittings for easy servicing. They have barb to slip adaptors.

Also, did you guys change pump hose by choice? I'm sure they were shipped with used ones and it makes sense but I just want to confirm.
 
Yes. DEFINITELY REPLACE THE HOSES.

These pumps came from an Ink Refilling Machine, so there was printer ink running through them.

I don't think you want that getting into your tank.
 
yea my first test run came out as black sludge... thankfully I was doing it at the sink without the wife watching.

5155T27

that's the mcmaster-carr part number I used. It's a clear tygon tubing which has a very soft shore rating. It's 1/4" ID with 3/32" wall thickness

As for connecting them, I was originally plumbed for 1/4" OD hose, so I just slid it on up in there and ziptied around it, not getting any leaks or bubbles from it
 
I used the 51075K28 part # from mcmaster-carr. It's black neoprene.

This matches what was in the pumps.
Either would work, just a matter of if you want a clear tubing to see the water going thru it or not.
dread240's tubing maybe softer then the one I got, but by that fact it may wear out faster too.

I haven't gotten mine running yet, so I can't tell you how it works.
 
I got mine hooked up last night and changed a gal of water while timing it, works pretty good, just noisy. I have to come up with something to quiet it down.. won't be a problem during the week but I don't want to skip daily water changes on the weekend
 
Mines going in the garage, so noise shouldn't be an issue.
Let us know what you do to quiet it down though.
 
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I may end up mounting it in the basement, Just didn't want to put anymore holes in the floor lol, and i like to be able to see it's working... then again I can still see the drain in the tank and the feed line so that would cover it
 
I may end up mounting it in the basement, Just didn't want to put anymore holes in the floor lol, and i like to be able to see it's working... then again I can still see the drain in the tank and the feed line so that would cover it

You guys would not have any of these issues if you bought a Stenner, :)
 
I've heard high volume stenner's are quite noisy as well too. This isn't like TOTALLY unbearable, and I'll be running it during the day when I'm not home most of the time, but this thing also pushed 1 gallon in 8 minutes... It used to take my hobby pumps almost 2 hours to do that, and even DrThompson doesn't get that much flow from his stenner.
 
Look around the house for anything like 12v 1a. I may possibly try and find a 6v 1.5-2A to slow it down some and maybe make it quieter, pwm can actually make them noisier
 
I have one, but I don't want to cut the end off for other reasons. It has a size M male connector on it so i'm going to get a size M female connection to solder on the pump motor.

I'd be interested to know how it works at a lower voltage (slower speed).
 
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