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Polyethylene (RO Tubing) vs. Airline for Dosing?

kinetic

Supporting Member
I'm setting up a dosing pump (Neptune DOS) and was wondering if I should use Polyethylene tubing (I have a ton left over from my RO/DI setups) or the neptune airline tubing.

I have probably 10 feet of polyethylene (both translucent and opaque), and a handful of elbow connectors. I'm not a huge fan of dangling limp airline tubing everywhere, especially since the DOS needs that special Neptune sized airline. I did order it already, but the kinks in it are troubling.

I'm leaning towards the RO tubing, but wanted to see if that wouldn't be a good choice for some reason?
 
Depends on the RO tubing. The Neptune line is softer than what we find traditionally which helps with the compression fitting.

If you start getting bubbles in the line and losing prime, check the line for cracks under the compression nut.


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I’ve only ever used the RO tubing with my DOS. I couldn’t tell you if the tubing that comes with it’s is any better. It is a tight fit though, so warm it up and jamb it on there good.
 
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