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  1. #21
    Senior Member Rank = Adult Champion Mikeh83's Avatar
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    Thanks John. I have actually reduced the temp from 23 to 18 over the past week.

    I would have no issues with maintaining any temperature in the grow on as I have a 3kw inline heater for the 300gal vat it’s overpowered for this specific reason and as I did not want large temp variances when I was preforming water changes. Since original set I I now have a trickle and overflow so that water change would not be an issue anymore.

    There are a few reasons why I decided to drop the temp.

    1 - cost
    2 - allowing the koi to winter

    My daily heating costs are around 80-90p

    I will likely hold 18 for a few weeks the drop them right down just for a few weeks and then bring them back up to 23 nearing the end of feb.

    I try to drop and increase the temp by .5 a day just to avoid unnecessary stress. But it can be done much faster if necessary


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  3. #22
    Extreme Koi Member Rank = Supreme Champion john1's Avatar
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    Mine is 350 gal similar to yours Mike and I have dropped to 19 deg mainly for cost and like you will drop a bit more soon.
    Would like to tricle in out but that drops the temp so much the heater would be on a lot if not all the time,maybe I am not insulated enough
    John

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  5. #23
    Senior Member Rank = Adult Champion Mikeh83's Avatar
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    My trickle is really slow. I think 7ltrs per hour there about.


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  7. #24
    Senior Member Rank = Adult Champion Mikeh83's Avatar
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    All still growing well,

    Out of the 14 fry 70% are over 6” and a few are really slow growers. The 1 metallic that had a deformed mount when at 1” seems to have grown into it and it is not really noticeable anymore. Winter grow on / Fry progress

    Got a great photo of the Showa yesterday.. more sumi development since 6th jan.




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  9. #25
    Extreme Koi Member Rank = Supreme Champion john1's Avatar
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    The showa looks really nice Mike and the others are growing well,what you feeding now?
    John

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  11. #26
    Senior Member Rank = Jussai g mac's Avatar
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    Great pic of the Showa.

  12. #27
    Senior Member Rank = Adult Champion Mikeh83's Avatar
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    Quote Originally Posted by john1 View Post
    The showa looks really nice Mike and the others are growing well,what you feeding now?
    I was running out of top koi and aqua source high growth so I bit the bullet and brought 15kg of saki balance.

    Considering how fast I was getting through the 1kg bags it’s not going to be wasted.

    I mainly decided on the saki as it should allow more feeding and reduced waste.

    The auto feeder is currently full with a mix of the 3.


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  14. #28
    Senior Member Rank = Adult Champion Mikeh83's Avatar
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    Quote Originally Posted by g mac View Post
    Great pic of the Showa.
    Thanks Gmac, I have real high hopes for it. In fact I’m not sure why it was so cheap given the quality and the patten. I’m wondering if the sumi started to break up so it was moved on before it was too late Winter grow on / Fry progress time will tell I suppose.


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  16. #29
    Senior Member Rank = Adult Champion Mikeh83's Avatar
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    Winter grow on / Fry progress

    Went out last night to shut the lights off and do my evening check as I do everyday to find the temp had dropped to 17.3c from 18.5c

    Heater has packed up! I did some initial checks, flow, reset, fuse.. all ok. Fortunately I managed to get a 1600w immersion type submersible coil heater from a neighbour and added that to my temp controller.

    I was very fortunate my neighbour was able to help me out at 8pm Sunday evening I would have been screwed.

    Note to self... get some back up heaters!


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    Last edited by Mikeh83; 18-01-2021 at 10:46 AM.

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  18. #30
    Senior Member Rank = Supreme Champion Ajm's Avatar
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    Luck man. Glad you got a quick fix for now matey. Any idea what's gone?

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    Freddyboy the legend

    "we are water keepers first"

    Johnathan

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  20. #31
    Senior Member Rank = Adult Champion Mikeh83's Avatar
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    I’m not sure, i got it second hand it’s pretty old I think. It had an old pac test sticker with a 2003 date on it Winter grow on / Fry progress.

    It’s going to be a pain to try and get it out as all the pluming is really packed in tight I may just leave it plumed in and get a drop in to see me through till I move this lot out.


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  22. #32
    Senior Member Rank = Jussai g mac's Avatar
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    That was a lucky break, getting it sorted on a Sunday night. Could have been such bad news for the fish.

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  24. #33
    Extreme Koi Member Rank = Supreme Champion john1's Avatar
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    At least you spotted it Mike,a couple of s/s aquarium ones should be fine that's what I use.
    John

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  26. #34
    Senior Member Rank = Adult Champion Mikeh83's Avatar
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    Quote Originally Posted by john1 View Post
    At least you spotted it Mike,a couple of s/s aquarium ones should be fine that's what I use.
    Yeah I have just picked up 4 500w s/s ones as back ups. Winter grow on / Fry progress


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  28. #35
    Senior Member Rank = Adult Champion Mikeh83's Avatar
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    Heaters turned up today, looked decent. When I plugged it in it was only pulling 200w! Annoying. Sending them back as 200w is useless for me.


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  30. #36
    Senior Member Rank = Supreme Champion Ajm's Avatar
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    Quote Originally Posted by Mikeh83 View Post
    Heaters turned up today, looked decent. When I plugged it in it was only pulling 200w! Annoying. Sending them back as 200w is useless for me.


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    Not good matey. Just using submersible ones now like or are you getting a new 3kw.?

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    Freddyboy the legend

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    Johnathan

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  32. #37
    Senior Member Rank = Adult Champion Mikeh83's Avatar
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    I am hoping I can fix the 3kw when the time suits. I decided to get a couple of the Schego Titanium 600w drop In ones seem to have top reviews and was recommended by a friend.

    Will always have them as back ups


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  34. #38
    Extreme Koi Member Rank = Supreme Champion john1's Avatar
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    Seems strange a 500watt only pulling 200watt no good,maybe need to check mine

    Where did you get the titanium ones from Mike ?

    That would be me taking your 3 kw one apart to see if it can be fixed.
    John

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  36. #39
    Senior Member Rank = Adult Champion Mikeh83's Avatar
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    Cheap Chinese items, May have been a bad batch.

    The best price on the titanium ones I found was £60 give or take pennies. Brought mine from aquacadabra I think some items you cannot scrimp on from a safety and quality perspective.

    https://www.aquacadabra.com/collecti...13311027806274


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  38. #40
    Extreme Koi Member Rank = Supreme Champion Frimley Koi keeper's Avatar
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    Quote Originally Posted by Mikeh83 View Post
    Heaters turned up today, looked decent. When I plugged it in it was only pulling 200w! Annoying. Sending them back as 200w is useless for me.


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    Sounds like your heater have got COVID Mike

    500s only drawing 200!!! That doesn't sound good

 

 
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