Tubing for DOS AWC?

gideon2086 · Apr 23, 2021

Hey there,

I need to run about 100ft of tubing to get my DOS setup for AWC. I'm wondering what others out there have used for tubing as the product made by Neptune is not nearly long enough.

Yates273 · Apr 23, 2021

Just use 1/4 Rodi tubing. The Neptune tubing is not that very good. Kinks way to easy

gideon2086 · Apr 23, 2021

Jason Yahr said:
Just use 1/4 Rodi tubing. The Neptune tubing is not that very good. Kinks way to easy

1/4 tubing will fit over the barb?

Yates273 · Apr 23, 2021

No but I would recommend getting the John guest fittings for the Dos and hook up that way. Much easier and I feel more secure

smokin'reefer · Apr 23, 2021

I believe these make a better fit. I had just pushed rodi line straight on DOS but it lost prime after a bit.

4 PACK - 1/4" x 1/8" nptf Female Adapter WHITE (Apex DOS Fitting) - Mur lok

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Yates273 · Apr 23, 2021

Those are it. Makes hooking up a breeze

DrMMI · Apr 23, 2021

Neptune customer service recommended surethane tubing for me because I kept having air leaks with rodi tubing. I haven't had an issue since switching.

Surethane Extruded Polyurethane Tubing | Advanced Technology Products

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gideon2086 · Apr 23, 2021

DrMMI said:
Neptune customer service recommended surethane tubing for me because I kept having air leaks with rodi tubing. I haven't had an issue since switching.

Surethane Extruded Polyurethane Tubing | Advanced Technology Products

Buy online from Advanced Technology Products - abrasion resistant Surethane® Polyurethane Tubing extruded by from ether-based resin. FDA Compliant.

www.atp4pneumatics.com

Without a mod? Which size?

DrMMI · Apr 23, 2021

gideon2086 said:
Without a mod? Which size?

This is exactly what I bought. No mod or john guest fittings

Tft12 · Apr 23, 2021

DrMMI said:
Neptune customer service recommended surethane tubing for me because I kept having air leaks with rodi tubing. I haven't had an issue since switching.

Surethane Extruded Polyurethane Tubing | Advanced Technology Products

Buy online from Advanced Technology Products - abrasion resistant Surethane® Polyurethane Tubing extruded by from ether-based resin. FDA Compliant.

www.atp4pneumatics.com

Were you using the John Guest fittings when you were getting the air leaks, or ro line directly onto the standard dos outputs?

DrMMI · Apr 23, 2021

Tft12 said:
Were you using the John Guest fittings when you were getting the air leaks, or ro line directly onto the standard dos outputs?

I had it directly on the dos unit.

Karliefish · Jul 30, 2021

DrMMI said:
This is exactly what I bought. No mod or john guest fittings

How has this tubing worked out for you? Any air leaks? Also do you use the Neptune DDR Dosing reservoirs? I keep having all kinds of problems with the Neptune DOS tubing not working correctly with the DDR reservoirsl

DrMMI · Jul 30, 2021

It's worked out great. For the alk and nitrate supplements, I don't have any bubbles in the lines. I dose these daily. I stopped my awc because of dinos and so the water has been sitting stagnant in the tubes for over a month. I'm noticing some air bubbles in that tubing. But when I was actually running the DOS, I didn't have any air leaks. I don't use the DDR.
One piece of advice I would make is to dunk the tubing in super hot water and then attach it to the dos so you get all the way up the nipple and a tight seal of the nut.

Karliefish · Jul 30, 2021

DrMMI said:
It's worked out great. For the alk and nitrate supplements, I don't have any bubbles in the lines. I dose these daily. I stopped my awc because of dinos and so the water has been sitting stagnant in the tubes for over a month. I'm noticing some air bubbles in that tubing. But when I was actually running the DOS, I didn't have any air leaks. I don't use the DDR.
One piece of advice I would make is to dunk the tubing in super hot water and then attach it to the dos so you get all the way up the nipple and a tight seal of the nut.

Great info - thanks for the quick reply.. Going to order now the tubing you recommend.