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  1. #21

    Update on the pond , getting there


    Sent from my iPhone using Tapatalk

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  3. #22
    Extreme Koi Member Rank = Kyusai Pomster's Avatar
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    Roy little O

    Thats well worth knowing for anybody building an indoor grow on or quarantine tank. Any links on recommended products?
    Last edited by Pomster; 20-07-2019 at 08:58 AM.

  4. #23
    Senior Member Rank = Nanasai Tom Koi's Avatar
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    Quote Originally Posted by andikoi View Post
    dont bother with jets as said use 2" underwater returns all with valves on outside of pond so you can dictate flow,i plumbed my single return into a Y joint followed by 2 valves and 2 pipes,one to pond and one over shower then i can turn shower off and feed straight to pond in winter,as for lights dont bother,koi dont have eyelids so cant shut their eyes,fit lights above pond,i use 20w led floods over mine,in pond lights could also make looking through window hard,oh and they will get covered in algae and always need cleaning,also as roy says get variable pumps, although size will be decided on what filter your using,,,andi
    I've seen LED strip lights they look very good, I wonder if they would be better than the beam off a floodlight?.,

  5. #24
    Senior Member Rank = Nanasai Tom Koi's Avatar
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    Quote Originally Posted by RoyLittle0 View Post
    Regrettably I am very sceptical of manufacturers claims on what is perceived as daylight, the problem is no one quotes CRI Colour Rendering Index, I have a marine tank and the corals need a certain light spectrum, which is natural sunlight. Sunlight in its pure form has a kelvin temperature of around 5,000 degrees kelvin and a colour rendering index of 100

    Most lamps you get have a 6,500 degrees kelvin and a colour rendering index of 80, although they don't quote the CRI normally. in sunlight you can view 100% of the true colour a lamp with a CRI of 80 you can only see 80% true colour.

    CRI is used to describing the effect of a light source on the colour appearance, so this is what is the most important to look for, and the thing that isn't normally quoted.

    So basically its a lucky dip on what works best with colours and what doesn't, also personal preference, anything above 5,000 kelvin to 10,000 kelvin can be classed as natural daylight, but only if it has a CRI of 95 or above

    Sorry that was a bit long winded but I've had customers quoted completely the wrong thing based on 6,500 kelvin and the colour was crap, this is for visual inspection lighting, so colour is important

    Rant over lol
    Hi Roy, have you a link to those lights you mention, as I wouldn't know what to ask for without getting it all arse about face

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  7. #25
    Senior Member Rank = Jussai RoyLittle0's Avatar
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    Quote Originally Posted by Tom Koi View Post
    Hi Roy, have you a link to those lights you mention, as I wouldn't know what to ask for without getting it all arse about face
    Depends what lights you want, I use GU10's in my marine aquarium in the sump
    https://www.downlightsdirect.co.uk/i...hoC_VgQAvD_BwE

    Or flood lights
    https://www.amazon.co.uk/Sealey-LED0.../dp/B01M9IJHAM

    Only 80 CRI but a good light for colour
    https://www.wholesaleledlights.co.uk...hoCZc8QAvD_BwE
    4600 Gallon Concrete Block and Fiberglass
    2.1 Meter x 0.71 Infinity Window
    2 x Aerated Bottom Drains and Skimmer
    Filtreau HiFlow 30 Drum Filter
    Bio Chamber - 140 litres K1
    Bakki Shower - 30 KG Sakura Far Infrared Media
    2 x 18,000 lh pumps

    http://www.koiforum.uk/pond-construction-pond-build-diaries/21720-roy-lynns-shiny-pond-day.html

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  9. #26
    Extreme Koi Member Rank = Kyusai Pomster's Avatar
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    Quote Originally Posted by RoyLittle0 View Post
    Depends what lights you want, I use GU10's in my marine aquarium in the sump
    https://www.downlightsdirect.co.uk/i...hoC_VgQAvD_BwE

    Or flood lights
    https://www.amazon.co.uk/Sealey-LED0.../dp/B01M9IJHAM

    Only 80 CRI but a good light for colour
    https://www.wholesaleledlights.co.uk...hoCZc8QAvD_BwE


    When you say 80 CRI is a good light for colour, do you mean to show the colour off, or to prevent fade?
    Not to read a newspaper makes you uninformed. But to read a newspaper makes you misinformed

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  11. #27
    Senior Member Rank = Jussai RoyLittle0's Avatar
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    Quote Originally Posted by Pomster View Post
    When you say 80 CRI is a good light for colour, do you mean to show the colour off, or to prevent fade?
    80 CRI or 80% true colour

    Its only 80% true colour but it shows good, close to true, natural daylight for the price, so it will show the fish colours well
    4600 Gallon Concrete Block and Fiberglass
    2.1 Meter x 0.71 Infinity Window
    2 x Aerated Bottom Drains and Skimmer
    Filtreau HiFlow 30 Drum Filter
    Bio Chamber - 140 litres K1
    Bakki Shower - 30 KG Sakura Far Infrared Media
    2 x 18,000 lh pumps

    http://www.koiforum.uk/pond-construction-pond-build-diaries/21720-roy-lynns-shiny-pond-day.html

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