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  1. #61
    Extreme Koi Member Rank = Supreme Champion Davej's Avatar
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    Quote Originally Posted by bowsaw View Post
    strange one, literally all you need to do is raise a nice high turbidity culture of phytoplankton and then add a seed batch of daphnia to it,

    you could use biological matter of plant feed for that, tiger prawns are raised in ponds doused with pig or chicken muck to feed the algae, that in turn feeds the prawns.

    but for small scale culture the water should have enough nutrients to raise a decent bloom, or just take water from the pond and use that to grown the plankton
    Thanks, its massively frustrating as if I could crack it would make the whole feed process so much easier.. If I could replicate the bloom I get in some of the 25l tubs in the 500l tanks things would be rocking!

    Happy to play and through the summer its the ideal time to learn and develop.. even if its for 2020. How would you suggest I prep a 500L tank?

    Many thanks

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  3. #62
    Extreme Koi Member Rank = Jussai bowsaw's Avatar
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    500ltr of pond water, will soon go green, could pass through a daphnia collection sieve to ensure its free of zoo plankton.

    think of that as your mother culture, dilute it down by taking a starter culture from it and retooling up the same way, if inside in winter, allow the pond water to warm to room temperature first, just in case it knocks things back. add that starter to either treated tapwater (faster than all that straining) or strained pond water, as it colours up then add a mixed randomised haul of daphnia, that way you get some that are reproducing, some that will in days and some that are probably on last legs, (used to have to hand sort with a scope for a certain instar, though that was not the stock setup but a experiment batch).

    add them and watch the population grow, in time you will get a feel for how long they last before they start to crash, and don't forget to frequently water change using the nice pea soup you have grown, start a series off a week or so apart to have a constant stream and back up and every now and then give the container a full clean and fresh stocking,
    the slow pond build thread

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  5. #63
    Senior Member Rank = Adult Champion RS2OOO's Avatar
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    Briefly going back to your artemia production, there's many different ways to separate the shells but the following worked best for me.

    I used to raise them in large glass sweet jars - the old fashion ones where Grandad would buy you a 1/4 Ib if you'd been good!

    Turn the aerator off, put a light bulb at mid-water level, wait 2 or 3 minutes.

    The shells will either sink or float and your entire artemia population will be congregated where the light is.

    Then syphon them out into a mesh over a jug.

    You'll get 100% pure brine shrimp with zero shells mixed in.

    Once the population has gone rinse out the jar, refill and start again.

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  7. #64
    Senior Member Rank = Adult Champion RS2OOO's Avatar
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    Can't get my mind off Chocolate Dust, Rhubarb & Custard, Army & Navy, and Strawberry Bon Bons since that post!

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  9. #65
    Extreme Koi Member Rank = Supreme Champion Davej's Avatar
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    Quote Originally Posted by bowsaw View Post
    500ltr of pond water, will soon go green, could pass through a daphnia collection sieve to ensure its free of zoo plankton.

    think of that as your mother culture, dilute it down by taking a starter culture from it and retooling up the same way, if inside in winter, allow the pond water to warm to room temperature first, just in case it knocks things back. add that starter to either treated tapwater (faster than all that straining) or strained pond water, as it colours up then add a mixed randomised haul of daphnia, that way you get some that are reproducing, some that will in days and some that are probably on last legs, (used to have to hand sort with a scope for a certain instar, though that was not the stock setup but a experiment batch).

    add them and watch the population grow, in time you will get a feel for how long they last before they start to crash, and don't forget to frequently water change using the nice pea soup you have grown, start a series off a week or so apart to have a constant stream and back up and every now and then give the container a full clean and fresh stocking,
    Thanks for that, it is something that I would really like to crack and it is real frustrating not having done so!

    Dave

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  11. #66
    Extreme Koi Member Rank = Supreme Champion Davej's Avatar
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    Quote Originally Posted by RS2OOO View Post
    Briefly going back to your artemia production, there's many different ways to separate the shells but the following worked best for me.

    I used to raise them in large glass sweet jars - the old fashion ones where Grandad would buy you a 1/4 Ib if you'd been good!

    Turn the aerator off, put a light bulb at mid-water level, wait 2 or 3 minutes.

    The shells will either sink or float and your entire artemia population will be congregated where the light is.

    Then syphon them out into a mesh over a jug.

    You'll get 100% pure brine shrimp with zero shells mixed in.

    Once the population has gone rinse out the jar, refill and start again.
    ta, this year I was rather more disciplined in rinsing the used bottle in a CT solution then in water before reuse, it seemed to provide more consistent results.

    Dave

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  13. #67
    Extreme Koi Member Rank = Supreme Champion Davej's Avatar
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    WIth some relief got the feeders running on the fry systems, hopefully will give me a little more kip.

    With .3 to .5mm powder the profi copes , but it needs to be level...

    the little tetra feeders are an alternate just a shame they have limited feed options.

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  15. #68
    Senior Member Rank = Adult Champion RS2OOO's Avatar
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    I have 500 grams of Queni stage 3...... Way more than I'm going to need so prepare yourself a 300 gram tub!

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  17. #69
    Extreme Koi Member Rank = Supreme Champion Davej's Avatar
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    Quote Originally Posted by RS2OOO View Post
    I have 500 grams of Queni stage 3...... Way more than I'm going to need so prepare yourself a 300 gram tub!
    Ta,

    Tomorrow could be paddling time in the wildlife pond, there are some serious tobies that I'd like to get to grips with.... but boy are they quick.

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  19. #70
    Quote Originally Posted by Davej View Post
    Ta,

    Tomorrow could be paddling time in the wildlife pond, there are some serious tobies that I'd like to get to grips with.... but boy are they quick.
    Its cold out there, I was paddling today! pulling creases out of liner before coping stones go on tomorrow.
    Built not bought!

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  21. #71
    Extreme Koi Member Rank = Supreme Champion Davej's Avatar
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    Quote Originally Posted by dave_vr6 View Post
    Its cold out there, I was paddling today! pulling creases out of liner before coping stones go on tomorrow.
    I cant set up a koi vat without getting creases in the bottom.
    But with water temp now moved up to 25C I think I can just about cope - however I think the prospects of success are pretty remote.

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