DOS Won't Maintain Prime

Stolireef · 07/07/2017, 02:26 PM

My new DOS refuses to maintain the prime on pump one. I've tried reseating the tube in the DOR but it keeps losing prime. Any suggestions?

The DOR is a really expensive reservoir and if it can't maintain prime, it's basically garbage and I'm more than a little miffed. I can't understand why they wouldn't use rigid refrigerator line tubing instead of the soft airline tubing.

JustinFromAL · 07/10/2017, 04:46 AM

Try reseating all the connections, if that fails open a support ticket with Neptune. I believe there were some early production model DOS that shipped with faulty heads, you might have one of those and be due a replacement.

07/07/2017, 02:26 PM	#1
Stolireef Registered Member Join Date: Mar 2008 Location: Scottsdale AZ Posts: 3,180 Blog Entries: 5	DOS Won't Maintain Prime My new DOS refuses to maintain the prime on pump one. I've tried reseating the tube in the DOR but it keeps losing prime. Any suggestions? The DOR is a really expensive reservoir and if it can't maintain prime, it's basically garbage and I'm more than a little miffed. I can't understand why they wouldn't use rigid refrigerator line tubing instead of the soft airline tubing. __________________ I want to burn twice as bright and half as long. Oh, and a full tank crash is just an excuse for a new build. Current Tank Info: 125 Rimless Leemar, Apex, Trigger 30 Elite Sump, Vertex 180i Skimmer, 2 X Gen4 Radion XR30W, BM Doser, 2xMP40WES, 2xTunze 6095, Sicce Syncra 4.0.

07/10/2017, 04:46 AM	#2
JustinFromAL Registered Member Join Date: Nov 2011 Location: Birmingham, AL Posts: 253	Try reseating all the connections, if that fails open a support ticket with Neptune. I believe there were some early production model DOS that shipped with faulty heads, you might have one of those and be due a replacement.