Help! With Neptune Systems Cor-15

Holy crap I need to find that
Is that it ?

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I have a pair of Cor 15's and a Cor 20 - great pumps and built like a Ford F150. I used the included union which is the preferred method per Neptune for noise and vibration reasons. I went to the local box store and bought a reducer like noted above. This way I can swap any of the Cor's regardless if it is a 15 or 20.

I have one 15 on my skimmer, one for a return, and the 20 is also a return for redundancy but also the one with the furthest or longest plumbing to my 1" sea swirl.
 
Great idea but my question is can I plumb it into the tank before it finishes curing?
The solvent hardens really fast I find after I glue and by the time I have everything connected again and wiring done up nice and neat the pump is ready to turn on. Unless your system is running back pressure to run flow through a bunch of other things you'll be fine running the system again in an hour or 2
 
Great idea but my question is can I plumb it into the tank before it finishes curing?

Sand pieces that are going to be glued together. Light sanding only to roughen up. Dry fit - to make sure everything fits and of proper length. Once you are happy take apart and prime all pieces. Let dry for 5 minutes or so. Once that is done start your glue process. Apply glue to both ends, connect the pieces, turn 1/4 way to even glue, count to 5, turn to final position while holding firmly together. If done correctly it will fill a bit / slight warm - hard to explain but you may feel it, and it will be set. Continue to next piece.

That should more or less do it and if possible let power head in tank move water while it rests. This is not high pressure but if you can let it wait for 30 or so minutes before letting it rip great but I've known people to just glue and go. I personally like to let it sit for a bit.

If I understand your question correctly anyway otherwise ignore me. If this is flex pipe with clamps also ignore me. Once you connect the dots and make sure everything is clamped you are good.
 
That stinks. Mine was good. Idk im out of ideas. If i had to have it today, i would trim the outside edge of that piece.
 
If you dont have a power head to continue circulating the tank water I would recommend getting one first you never know what might go wrong you dont want to be without flow for any decent amount of time
 
If you absolutely cannot glue, the only other thing I can think of is to go to the hardware store and buy a 1.25 threaded union. Take the slip connection out of the neptune union and replace with the threaded connection that you just purchased. Then you could use a 1.25" npt to 1" barb and no gluing would be required.

It's my understanding that there is no issue doing this the neptune fitting, but perhaps someone else can comment that knows for sure.
 
This is what i used. Just missing a little piece of pipe from the coupler to the reducer. 1 1/4 x 1 inch reducer and then 1 inch barb fitting. If you can find a reducing barb fitting that would work as well i believe.
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