Welcome to Koi Forum. Is this your first visit? Register
Results 1 to 4 of 4
  1. #1

    how safe is water in filter if stood for a while

    Just returning to UK and am told the pump to my bio filter has tripped so water hasn't ben circulating for 2-3 weeks from/to my pond. Fortunately its not my only form of filtration, so fish are okay. My bio unit hasn't dried out and the filter bed has been kept moving thru the air unit so wondering if the bacteria in it will still be alive and whether it'd be safe to be simply switch it bk on or whether I should drain it rather than mixing it bk in with pond water..? any suggestions ???

  2. Thanks john1, freddyboy Thanked / Liked this Post
  3. #2
    Extreme Koi Member Rank = Hassai Scamp's Avatar
    Join Date
    Nov 2014
    Thanks / Likes
    Hi Steve, some bacteria may be alive still, difficult to tell...is there anyway you can drain the unit to waste, not to pond, then immediately refill with fresh pond water and start up the pump? That’s what I would do if possible..

  4. Thanks john1, freddyboy Thanked / Liked this Post
  5. #3
    Extreme Koi Member Rank = Grand Champion john1's Avatar
    Join Date
    Aug 2013
    Thanks / Likes
    Hi Stev, I think you will be ok as no water has flowed into the bio,but as Scamp says I would drain it and and dump the pipe feed water to be sure,then fill from pond then top up pond.
    Keep an eye on the ammonia etc,good luck mate.

  6. Thanks freddyboy Thanked / Liked this Post
  7. #4
    Whilst this thread is relatively old now I can say I had a similar occurrence and this was almost 4 weeks of no water passing through the bio tank, only air was still being pumped in to the K1 media, this was in August/September this year, I did not drain the bio and I finally got the system back up and running, all the koi survived without any ill effect, I carried out a water test showed no Ammonia, but a small reading for Nitrite 0.1 mg/l, within one week everything was back to normal, Ammonia 0 mg/l, Nitrite 0 mg/l, Nitrate 30 mg/l, PH 7.8, so I think the bacteria proved they had survived in large enough quantity's to keep the water test within reason, obviously this was in warmer conditions than now which would help bacteria multiply quickly.

  8. Thanks freddyboy 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 09:41 PM. Online Koi Mag Forum
Powered by vBulletin® Version 4.2.3
Copyright © 2019 vBulletin Solutions, Inc. All rights reserved.

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