Welcome to Koi Forum. Is this your first visit? Register
Results 1 to 8 of 8
  1. #1
    Extreme Koi Member Rank = Nisai nicke20's Avatar
    Join Date
    Aug 2014
    Posts
    67
    Thanks / Likes
    20

    nexus outer chamber air recomendations

    I have my nexus 200 running but the outer chamber just doesn't bubble much at all on one side. im assuming its not quite level and having a kockney koi 50l air pump probably underpowered (air wise)
    so how big a pump? 100? 130? and is the standard airation pipe good enough or is there a better method?
    the nexus has about the max amount of media that you can put in the outer chamber
    thanks in advance
    Nick



  2. #2
    Senior Member Rank = Adult Champion dbs's Avatar
    Join Date
    Jul 2020
    Location
    East Norfolk
    Posts
    1,896
    Thanks / Likes
    2995
    I had that on mime once, I lowered the water and poked all the airholes with a thin nail, they had calcified up a bit... sorted !!

    I did at alter date put a 95 lph pump on it instead too

    Sent from my SM-G998B using Tapatalk

  3. Thanks nicke20, Adyprice Thanked / Liked this Post
  4. #3
    Senior Member Rank = Supreme Champion Ajm's Avatar
    Join Date
    Mar 2018
    Location
    Durham
    Posts
    7,893
    Thanks / Likes
    15779
    Heard a few people mention not using it and adding stones/cans around it.. Think it may have been freddyboy

    Sent from my F5121 using Tapatalk
    Freddyboy the legend

    "we are water keepers first"

    Johnathan

  5. Thanks nicke20, Adyprice, dbs Thanked / Liked this Post
  6. #4
    Check the air pipe has not become unclipped, if the pipe isn’t level the lowest side will not turn over, path of least resistance rule applies. Remove the pipe and clean the calcium build up, not just round the holes, all the way round.
    Eleven year old Nexus still on original pipe, with an eleven year old EA AP95 pump, diaphragms changed twice.

  7. Thanks Adyprice, dbs Thanked / Liked this Post
  8. #5
    Mine clogged up years ago, I now have 6 air stones running off a 130 lpm air pump. It’s a lot more flexible, you can move them around and eliminate any dead spots. It turns K1 over much more than the original jets ever did, and it’s easy to clean or replace one if they get a bit clogged.
    19,000 litres
    Nexus 320 with Dracodrum and submersible UV
    Blue Eco 320
    Eazy Pod on skimmer
    Dura+ 10kW Heat Pump
    12 koi

  9. Thanks Adyprice, dbs Thanked / Liked this Post
  10. #6
    Hi I took Advice off this forum including from Fred and replaced the pipe with air stones.
    It turns over much better in my opinion and also stops muck from building up at the base of the bio chamber.
    Cost about £30 altogether off eBay for some 10mm pipe and 8 mm pipe. Some 10mm to 8mm t connectors and 6 off air stones.
    The only thing I would change is I would buy the EA 10mm pipe as itís more solid than regular air line and clips into the existing nexus pipe clips better to keep the pipe in place.
    Might be cheaper to just clean up the existing pipe as a first option as per other forum member responses...
    Cheers
    Ady


    Sent from my iPhone using Tapatalk

  11. Thanks Ajm, dbs Thanked / Liked this Post
  12. #7
    Extreme Koi Member Rank = Kyusai Scamp's Avatar
    Join Date
    Nov 2014
    Posts
    1,034
    Thanks / Likes
    1143
    Yep half can airstones and 250 kph on my 300 for years now..good as gold. The Nexus air ring clogged quickly for me in hard water area, so took it out completely.

  13. #8
    Extreme Koi Member Rank = Nisai nicke20's Avatar
    Join Date
    Aug 2014
    Posts
    67
    Thanks / Likes
    20
    Thanks for all the advice, im in a soft water area so no calcification. I bought a jeb 100 air pump, omg what a difference. The only problem was so much had settled in the outer chamber that turning on the new pump created a pond cloud machine!! anyway two days later all settled and working great

  14. Thanks KyKoi Thanked / Liked this Post
 

 

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
All times are GMT +1. The time now is 05:30 AM. Online Koi Mag Forum
Powered by vBulletin® Version 4.2.3
Copyright © 2021 vBulletin Solutions, Inc. All rights reserved.

vBulletin Improved By vBFoster® (Lite Version), © UltimateScheme, Ltd.