Results 1 to 7 of 7

Thread: Air bubbles

  1. #1
    New User
    Join Date
    Feb 2018
    Location
    US, Pacific
    Posts
    8

    Air bubbles

    I have 1 head that keeps getting air bubbles in the lines. Anyone ever deal with this and how did you fix it? I’ve changed the lines made sure they were seated right. Still have air bubbles.


    Sent from my iPhone using Tapatalk

  2. #2
    Regular Vistor
    Join Date
    Aug 2017
    Location
    Oceanside, CA
    Posts
    37
    Quote Originally Posted by Woonkie View Post
    I have 1 head that keeps getting air bubbles in the lines. Anyone ever deal with this and how did you fix it? I’ve changed the lines made sure they were seated right. Still have air bubbles.


    Sent from my iPhone using Tapatalk
    Yes I've had the same problem. I changed that particular tubing to this....DR. Moss 1/4" airline tubing
    Found it on Amazon. Won't be able to use it from dos to ddr but from dos to tank works very well.


    Sent from my iPhone using Tapatalk

  3. #3
    Frequent Visitor rkpetersen's Avatar
    Join Date
    Jun 2017
    Location
    Near Seattle
    Posts
    940
    Where are you seeing the air bubbles?

    If it's proximally, near the DDR, it may be leaking through the John Guess fittings. I had this happen, and even cutting the tubing perfectly square, reseating it, and adding fitting locks didn't solve it. What did solve it was encasing each fitting in silicone caulk. No more leak. Also, once hardened, the caulk can be removed cleanly and the fitting still functions normally.

    If you see bubbles after the DOS only, it's probably leaking through the incoming pump connector. Re hand-tightening the nut may fix this. If you chose to re-do it, the end of the tubing has to be perfectly square and pushed all the way up onto the barb. Then hand tighten the fitting, and do it again the next day, and the day after that. Don't get overly aggressive; you should get maybe a 1/4 turn tighter each day. This has worked long term for me, although it's not permanent and eventually the tubing will thin so much that re-tightening won't fix it and it will need to be redone again.

  4. #4
    Frequent Visitor
    Join Date
    Jun 2015
    Location
    UK
    Posts
    153
    Have a search, there's lots of users having this issue. It's a PITA, but can be reduced by using the original Neptune tubing and dipping the end in hot water before fitting to the nozzle.

    Others have gone to extreme measures and fitted John Guest adaptors to the nozzles and run RO tubing instead.

  5. #5
    New User
    Join Date
    Mar 2014
    Location
    Lorain, Ohio
    Posts
    11
    I have air bubbles between DDR and DOS. Very disappointing in something that costs so much and is basically just a plastic jug.

    Sent from my SM-G965U using Tapatalk

  6. #6
    Frequent Visitor
    Join Date
    Jul 2017
    Location
    UK
    Posts
    129
    I brought the TMC containers as the Neptune ones are insanely expensive but also experienced bubbles. Took the the John Guest fitting off, adding some plumbers tap and screwed back the fitting and never had the issue again. Not sure if it will work for the DDR but worth giving it a go

  7. #7
    New User
    Join Date
    Mar 2014
    Location
    Lorain, Ohio
    Posts
    11
    Quote Originally Posted by Clownfishy View Post
    I brought the TMC containers as the Neptune ones are insanely expensive but also experienced bubbles. Took the the John Guest fitting off, adding some plumbers tap and screwed back the fitting and never had the issue again. Not sure if it will work for the DDR but worth giving it a go
    Not sure if the fittings on the DDR unscrew but I'll look. Thanks for the advice

    Sent from my SM-G965U using Tapatalk

Similar Threads

  1. Help! Bubbles
    By Eric w in forum DŌS & DDR – Dosing and Fluid Metering System
    Replies: 8
    Last Post: 07-17-2018, 12:13
  2. Question: Few small air bubbles. Okay?
    By Fringe09 in forum DŌS & DDR – Dosing and Fluid Metering System
    Replies: 4
    Last Post: 11-04-2017, 11:30
  3. Question: Cond Prob and Air Bubbles?
    By chadg in forum A2 Apex/ApexEL and A3 Apex Pro/Apex/Apex Jr
    Replies: 2
    Last Post: 08-03-2016, 13:35
  4. Major issue! Air bubbles giving improper 2 part amount!
    By kurfer# in forum DŌS & DDR – Dosing and Fluid Metering System
    Replies: 19
    Last Post: 04-14-2015, 12:19
  5. Do air bubbles cause shifts in the pH probe?
    By Ape-Fish in forum AquaBus Modules, Probes, and Breakout Boxes
    Replies: 3
    Last Post: 10-28-2013, 14:49

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •