Welcome to Koi Forum. Is this your first visit? Register
Page 438 of 591 FirstFirst ... 338388428436437438439440448488538 ... LastLast
Results 8,741 to 8,760 of 11806
  1. #8741
    Quote Originally Posted by Spongebob View Post
    Jim how often is your auto defrost kicking in? Mines heating fine but constantly freezing up and defrosting in these conditions. Im not having it on over night in these temps cant see the point.
    ASHP definitely have a role to play - ideal for swimming pools when ambient temp during swimming season usually double figures. I can also see the attraction for ponds, but they will always struggle with icing and cutting out to defrost when it's very cold AND damp.
    As far as I know the COP specifications are quoted in "ideal" conditions with dry air and no icing up occurring. A bit like official car MPG figures

    Plenty of ASHP sales people and government green lobbyists will tell you that you should get rid of your gas boiler and heat your entire home with ASHP instead.
    Would like to see the size/cost of an ASHP that could pump out 30kW in these conditions with a COP of at least 4 (to equal cost of gas/kWhr) without defrost down time.

    Anyway, back to pond temperatures.
    I made the decision (based on Manky Sankey's web info) to choose the option to only heat sufficiently to prevent temperatures falling below 4C.
    To this end my pond is not insulated as this would have been counter productive (below ground temp is above 4C all year round - unless you are in the Arctic).
    The pond is fully in ground and never covered.
    My 2400W bank of "drop in heaters" in the filter outlet chamber are set to come on at 5C, but despite air temperatures being much lower than this for days the water temp is hovering at about 5.5C so they haven't been needed.
    I guess the temp is being held by "heat" from surrounding ground.
    Fish are mostly "resting" at 5.5C, but not clamped.
    Will happily take wheatgerm at 7C and above.
    Last edited by Ukzero; 31-12-2020 at 02:34 PM.
    My DIY ponds from 1988 until present day.
    All can be found here:
    https://www.ukzero.com/pond.htm

  2. Thanks freddyboy, arceye, RS2OOO, Wain Thanked / Liked this Post
  3. #8742
    Senior Member Rank = Gosai Jampot's Avatar
    Join Date
    May 2020
    Location
    Chorley. Lancs
    Posts
    251
    Thanks / Likes
    308
    Jim how often is your auto defrost kicking in? Mines heating fine but constantly freezing up and defrosting in these conditions.
    Stockport / Chorley we must have similar weather conditions I guess. Like Akzuro says, the auto defrost has kicked in more often since it's been damp and cold but I couldn't guess how often. Certainly several times a day.

    The ice compaction on the element wasn't just preventing heat exchange - the air couldn't even circulate so the auto defrost had no chance. The published specs for the machine claim it will extract heat down to -15 but the damp / snow blockage seems to be the killer.

    Back up to 14.2 now though so all good.

    Jim
    I don't keep fish, I keep water. I don't keep fish, I keep water. I don't keep fish I kee........

  4. Thanks freddyboy, arceye Thanked / Liked this Post
  5. #8743
    Senior Member Rank = Mature Champion smartin's Avatar
    Join Date
    Mar 2019
    Location
    East Sussex
    Posts
    2,464
    Thanks / Likes
    5204
    Hi All,

    the new pond thermometers arrived yesterday so i put one in today to countercheck the temperature against the old thermometer, after an hour to acclimatise the old thermometer read 14.2c and the new one shows at 13.4c so there is a difference of .8c between the two....... so pond temp somewhere between the 2 so with a week of very cold weather and hard night time frosts i am happy with the pond temp, it has dropped a full 2 degree's over the past week or so.... 300w heater on 24/7.
    2200 gallons,infinity window,
    Evolve 4k combi,spindrifter,
    2x20k pumps, BD,Skimmer,
    Shower, ASHP

  6. Thanks freddyboy, arceye, RS2OOO, silver.wolf.9883, Wain Thanked / Liked this Post
  7. #8744
    Senior Member Rank = Hassai arceye's Avatar
    Join Date
    Mar 2019
    Location
    Cleveleys, Lancs
    Posts
    880
    Thanks / Likes
    2053
    Below zero air temp again last night, rose a little today to 4.5c ... Pond Temp still chilly at 2.8c
    Forecast doesn't show much change for the next week so think all will remain on the chilly side.
    Fish are slow but seem happy enough yet.

  8. Thanks freddyboy, Wain Thanked / Liked this Post
  9. #8745
    Senior Member Rank = Supreme Champion RS2OOO's Avatar
    Join Date
    Feb 2018
    Location
    South East
    Posts
    5,936
    Thanks / Likes
    13162
    Quote Originally Posted by smartin View Post
    Hi All,

    the new pond thermometers arrived yesterday so i put one in today to countercheck the temperature against the old thermometer, after an hour to acclimatise the old thermometer read 14.2c and the new one shows at 13.4c so there is a difference of .8c between the two....... so pond temp somewhere between the 2 so with a week of very cold weather and hard night time frosts i am happy with the pond temp, it has dropped a full 2 degree's over the past week or so.... 300w heater on 24/7.
    My temp controller also reads different to the thermometer, about 0.2C lower. Would assume the temp controller is the more accurate being electronic but who knows.

    You are still doing well with temps that high running the little 300w heater.

    My 600w now set at 13C with 0.2C variance. Checked twice today and both times water was at 12.8C with heater constantly on.

    If it hasn't got above 12.8C by Monday I'll lower heater to that temp. (Working all weekend so won't be able to properly monitor until then).

    Gave one feed and koi were slower to eat it all today, took about 8 mins Vs the usual 4 or 5 mins.

    Sent from my Pixel 4a using Tapatalk

  10. Thanks arceye, smartin, freddyboy, Wain Thanked / Liked this Post
  11. #8746
    Smartin

    I have posted elsewhere on this forum, ref thermometers both electronic & tubes, As an engineer who spent many years on test equipments, within the Aerospace industry.
    I was always proving that stand alone units, that you cannot Calibrate, prior to collecting Data, would regularly have variations of 1° to 2° c. Some even worse?
    Even if it was showing whole degrees & decimal places i.e. -: 7.4° could easily be out by the above limits either plus or minus, so 5.4° or 9.4° ?
    If you purchase a Calibratable unit, you can be sure, after each re-Cal!
    But all electronics drift, so don't believe the decimal place, unless you have several thermo, units that can confirm your readings.

    Cost is the reliability factor, so if you have two or three units, take the readings then "Average them" & you should be close?

    Stay Lucky in 2021!


    Sent from my iPad using Tapatalk

  12. Thanks smartin, RS2OOO, freddyboy, arceye, Wain Thanked / Liked this Post
  13. #8747
    Senior Member Rank = Mature Champion smartin's Avatar
    Join Date
    Mar 2019
    Location
    East Sussex
    Posts
    2,464
    Thanks / Likes
    5204
    Quote Originally Posted by silver.wolf.9883 View Post
    Smartin

    I have posted elsewhere on this forum, ref thermometers both electronic & tubes, As an engineer who spent many years on test equipments, within the Aerospace industry.
    I was always proving that stand alone units, that you cannot Calibrate, prior to collecting Data, would regularly have variations of 1° to 2° c. Some even worse?
    Even if it was showing whole degrees & decimal places i.e. -: 7.4° could easily be out by the above limits either plus or minus, so 5.4° or 9.4° ?
    If you purchase a Calibratable unit, you can be sure, after each re-Cal!
    But all electronics drift, so don't believe the decimal place, unless you have several thermo, units that can confirm your readings.

    Cost is the reliability factor, so if you have two or three units, take the readings then "Average them" & you should be close?

    Stay Lucky in 2021!


    Sent from my iPad using Tapatalk
    thanks silverwolf for your comments, that makes sense to me..... i hope your health is improving, keep safe, all the best Steve.
    2200 gallons,infinity window,
    Evolve 4k combi,spindrifter,
    2x20k pumps, BD,Skimmer,
    Shower, ASHP

  14. Thanks RS2OOO, freddyboy, arceye, silver.wolf.9883, Wain Thanked / Liked this Post
  15. #8748
    Senior Member Rank = Mature Champion smartin's Avatar
    Join Date
    Mar 2019
    Location
    East Sussex
    Posts
    2,464
    Thanks / Likes
    5204
    Quote Originally Posted by RS2OOO View Post
    My temp controller also reads different to the thermometer, about 0.2C lower. Would assume the temp controller is the more accurate being electronic but who knows.

    You are still doing well with temps that high running the little 300w heater.

    My 600w now set at 13C with 0.2C variance. Checked twice today and both times water was at 12.8C with heater constantly on.

    If it hasn't got above 12.8C by Monday I'll lower heater to that temp. (Working all weekend so won't be able to properly monitor until then).

    Gave one feed and koi were slower to eat it all today, took about 8 mins Vs the usual 4 or 5 mins.

    Sent from my Pixel 4a using Tapatalk
    Hi RS,
    Yes my fish are not eating as much either now, the 2 degree reduction in temp is quite noticeable, some food even makes the skimmer now which is a first as they usually eat it all prior..... reducing feed quantity accordingly.... feeding once or twice a day.
    2200 gallons,infinity window,
    Evolve 4k combi,spindrifter,
    2x20k pumps, BD,Skimmer,
    Shower, ASHP

  16. Thanks RS2OOO, freddyboy, arceye, Wain Thanked / Liked this Post
  17. #8749
    Senior Member Rank = Hassai arceye's Avatar
    Join Date
    Mar 2019
    Location
    Cleveleys, Lancs
    Posts
    880
    Thanks / Likes
    2053
    Thermometer accuracy is always going to be in doubt to some extent I suppose, but it does give at least an idea of what is going on re temp swings etc. The one I use for my air temp / pond temp measurements pretty closely matches the indoor / outdoor temperature monitor we have in the house.
    How accurate the measurements are I don't truly know, but believe they are good enough for a ballpark figure to get an overview of what is going on.

    Anyhow, another cold sub zero night, 12:00 Air temp reading 0.9c and still a layer of frost on outside tables etc... Pond temp reading 2.3c Accuracy aside what I do know is its chilly

  18. Thanks smartin, freddyboy, Wain Thanked / Liked this Post
  19. #8750
    Hey all hope everyone is well and had a fantastic Christmas and new year!!!!

    Location dartford
    Outside temp 5c
    Time one clock afternoon
    Pond temp 7c

    The outside temp yesterday and the day before I don’t know but was absolutely cutting! The coldest iv felt in years. I think the pond being covered and the filter house being insulated has just kept it at bay for the few really cold days! I’m happy with 7c just pray the temp continues to rise even is it’s by 1 or 2c!

    All the best guys that warmer weather is only about 5 months away now The Daily pond temp threadThe Daily pond temp threadThe Daily pond temp thread


    Sent from my iPhone using Tapatalk

  20. Thanks arceye, RS2OOO, freddyboy, smartin, Wain Thanked / Liked this Post
  21. #8751
    Senior Member Rank = Supreme Champion RS2OOO's Avatar
    Join Date
    Feb 2018
    Location
    South East
    Posts
    5,936
    Thanks / Likes
    13162
    7C is pretty good going considering how cold it has been. I was out all day yesterday with 3 layers on and was shivering with ice cold hands and it wasn't even windy.

  22. Thanks freddyboy, arceye, smartin, Wain Thanked / Liked this Post
  23. #8752
    Senior Member Rank = Hassai arceye's Avatar
    Join Date
    Mar 2019
    Location
    Cleveleys, Lancs
    Posts
    880
    Thanks / Likes
    2053
    11:00 Air temp 2.8c ... Pond Temp same as yesterday at 2.3c

    No signs of improvement to come in the next week according to Met office so will be interesting see if pond gets much colder yet.

  24. Thanks smartin, Wain Thanked / Liked this Post
  25. #8753
    Quote Originally Posted by RS2OOO View Post
    7C is pretty good going considering how cold it has been. I was out all day yesterday with 3 layers on and was shivering with ice cold hands and it wasn't even windy.
    Pond temp sat at 10c for a long time probably around 6 weeks maybe more. But this cold spell has done the damage knocking it down. I’m not feeding at anything below 10 so they have missed a few days food bless them. Strangely I an ochiba that through winter seems to grow past all the other fish! He done it last year and done the same again ! I can’t be imagining it lol


    Sent from my iPhone using Tapatalk

  26. Thanks arceye, smartin, RS2OOO Thanked / Liked this Post
  27. #8754
    Senior Member Rank = Hassai Wain's Avatar
    Join Date
    Jul 2020
    Location
    Rotherham
    Posts
    763
    Thanks / Likes
    1383
    Covers on every night and lifted in morning, neighbour must think I am mad , snow / ice / rain never fail

    Stopped feeding now, fish very lethargic, minimal movement even as covers lifted.

    Pond temp currently 4.6C, winter has set in now

    Stay safe and heres to a better 2021 everyone
    1000 gal
    2 x Hozelock 6000ltr 9W UV
    Allpond Spin Filter 8000 11W UV
    Blagdon pond oxy 640 ltr/hr

  28. Thanks arceye Thanked / Liked this Post
  29. #8755
    Moderator Rank = Supreme Champion miles41's Avatar
    Join Date
    Aug 2009
    Location
    Redditch, Worcestershire
    Posts
    8,611
    Thanks / Likes
    346
    Dry and chilly today, but no snow expected this week!

    Pond now at 10.2°c with heater coming on and off occasionally. Still feeding small amounts of wheatgerm once, sometimes twice a day. Koi still relatively active and up looking for food!


    Sent from my iPhone using Tapatalk
    1630 Gallon raised pond
    4" 'Avenue' bottom drain
    Estro sieve
    Econobead EB60 bead filter
    Sequence 18000 pump, 6000 pump on skimmer line
    Elecro 2kW in-line heater
    Evolution Aqua 70 air pump
    Standard wall skimmer
    Hozelock Vorton 55watt UV
    and some nice koi

  30. Thanks arceye Thanked / Liked this Post
  31. #8756
    Senior Member Rank = Hassai arceye's Avatar
    Join Date
    Mar 2019
    Location
    Cleveleys, Lancs
    Posts
    880
    Thanks / Likes
    2053
    Froze hard again last night,
    10:00 Air Temp 2.3c .. Pond Down a bit further to 2c ..

  32. #8757
    Senior Member Rank = Hassai big h's Avatar
    Join Date
    Feb 2016
    Location
    East Yorkshire
    Posts
    874
    Thanks / Likes
    1157
    Quote Originally Posted by arceye View Post
    Froze hard again last night,
    10:00 Air Temp 2.3c .. Pond Down a bit further to 2c ..

    Am i reading that right your pond is down to 2 degrees

  33. #8758
    Senior Member Rank = Hassai arceye's Avatar
    Join Date
    Mar 2019
    Location
    Cleveleys, Lancs
    Posts
    880
    Thanks / Likes
    2053
    Quote Originally Posted by big h View Post
    Am i reading that right your pond is down to 2 degrees
    Yeah, unfortunately.

    Just took another reading and rose slightly through the day to 2.4c... really need this cold spell to break.
    Last edited by arceye; 04-01-2021 at 07:25 PM.

  34. #8759
    Senior Member Rank = Hassai big h's Avatar
    Join Date
    Feb 2016
    Location
    East Yorkshire
    Posts
    874
    Thanks / Likes
    1157
    You can really start losing fish at them temps bud.Can you buy a cheap heater and get it to 5 or at least cover

  35. Thanks arceye Thanked / Liked this Post
  36. #8760
    Senior Member Rank = Hassai arceye's Avatar
    Join Date
    Mar 2019
    Location
    Cleveleys, Lancs
    Posts
    880
    Thanks / Likes
    2053
    Quote Originally Posted by big h View Post
    You can really start losing fish at them temps bud.Can you buy a cheap heater and get it to 5 or at least cover
    Will look at heaters.. have turned my pump right down for tonight, think I'm chilling through lack of insulation on filter and having an open return. Was tempted to turn filter off overnight like we used to years ago in winter but I know it isn't recommended these days.

    I've also resorted to pouring hot water into the return every half hour this evening, thats temporarily brought it up to 2.6 now.. better than nothing at all but not a solution I know.

    Covering probably isn't an option at the moment, its barely got above freezing for the last week and it is taking its toll, anyway, off to look at cheap heaters.

  37. Thanks Wain Thanked / Liked this Post
 

 
Page 438 of 591 FirstFirst ... 338388428436437438439440448488538 ... LastLast

Similar Threads

  1. The complete build start to finish
    By 0765peter in forum Pond Construction and Pond Build Diaries
    Replies: 31
    Last Post: 27-03-2014, 10:15 AM
  2. Kanundra
    By TUTTY in forum General Koi Carp Chat
    Replies: 11
    Last Post: 12-03-2014, 09:05 PM
  3. For Sale 1kw Profi Style Heater
    By muttley71 in forum Koi and Pond Equipment for Sale
    Replies: 0
    Last Post: 15-09-2013, 08:18 PM
  4. Water tests
    By JimerC in forum General Koi Carp Chat
    Replies: 11
    Last Post: 18-08-2013, 10:39 AM
  5. Geeze!!!
    By Kanundra in forum General Koi Carp Chat
    Replies: 1
    Last Post: 17-08-2013, 04:02 PM

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 01:54 PM. Online Koi Mag Forum
Powered by vBulletin® Version 4.2.3
Copyright © 2024 vBulletin Solutions, Inc. All rights reserved.

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