Open Bottom Tank - Awesome. Need private tankbuilder (hobbyist) in Jozi.

Discussion in 'General Discussions' started by dutchdog, Feb 24, 2012.

  1. dutchdog

    dutchdog

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    So I am researching tanks and tankdesigns. I got a few quotes, but unfortunately I cant afford their tanks/labour.


    I am looking for someone who can build tanks in their spare time over the weekends who has been doing this for years and who wants to make some extra money on the side and who is intrested in this project. It will be for discus fish and not for marine.


    I have been looking at this exact tank design. Please no flame war if it is good or not, as I find it atractive and it will work for my needs. (high aquarium, still easy maintainable.)


    For those with an open mind, I was blown away by this concept. The pressure on the top part is inwards and not outwards apperently.. intresting. Bottom section must be big enough and solid enough to hold water column in case of disaster. colum must be same dimensions so I wonder how to calculate what glass to take here or even to make it out of polycarbonate or even a cylinder polycarbonate.


    I dig this design very much and gives a lot of advantages over convential design. :thumbup:








    Freshwater OPEN BOTTOM TANK discus


    http://www.youtube.com/watch?v=SGXfIz_mIcw


    Other video's:


    http://www.youtube.com/watch?v=SGXfIz_mIcw


    http://www.youtube.com/watch?v=qn5tDyBBCaw&feature=channel


    http://www.youtube.com/watch?v=wKM32LpHizs&feature=relmfu


    Marine OPEN BOTTOM TANK


    http://www.youtube.com/watch?v=C2EIO2hX1Hc&feature=relmfu


    Quote:


    Taking away the stress of maintaining your aquarium will bring back the enjoyment that fish keeping once brought you. THE OPEN BOTTOM TANK
    Advantages
    ) No more splashing salt water out from tank to mess up surrounding area
    2) Water evaporation cause by air pump reduced by 100%
    3) Waterfall can be constructed inside tank to create a stronger current
    4) Air flow can be increased as bubbling air ONLY rise into top tank. All dried salt will fall back into tank.
    5) Free movement for fish to navigate between top and bottom tank
    6) Hiding space at bottom tank for the smaller fish. More coral can be added into lower tank
    7) Dead fish if any can be easily removed from the bottom opening outlet without having to remove coral to reach them
    8) No fear on over flow filter as box filter is constructed inside lower tank
    9) Replacement or cleaning of sponge in box filter can be easily removed in the lower tank
    10) Changing of water in top tank is not require
    11) Cut down cost on salt due to NO splasing water droplet cause by airpump, as air stone usually create air bubble that will mess up the exterior of the fish tank with salt.
    12) Very suitable for those busy people who have no time at all to maintain their tank yet love to keep one at home
    13) Waterpump will NOT run dry when partial change of water is in progress
    14) Easy to maintain
    15) Simplified
    16) High tank and easy access for cleaning and water changes.
     
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  3. Kuhli Loach

    Kuhli Loach

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    Easy to build if you put your mind to it. Hope you have long arms to clean the glass when you have to.
     
  4. Reedfish

    Reedfish Moderator

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    I think there won't be sufficient surface area in relation to volume for adequate oxygenation.
     
  5. Corne

    Corne

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    I saw the links ,but the advantages is not that good
    It is like having a tank and you use the sump as a display and the main tank as a display

    If you want that effect build a high thin tank with a massive sump ?

    My 2 cents
     
  6. Corne

    Corne

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    I saw the links ,but the advantages is not that good
    It is like having a tank and you use the sump as a display and the main tank as a display

    If you want that effect build a high thin tank with a massive sump ?

    My 2 cents
     
  7. wrenchy

    wrenchy

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    I could supply the glass at a very very good price!! i have contacts in the industry but however none in the fish tank building one haha if you need a quote just pm me! If you based in jozi i could even deliver for you :)
     
  8. OP
    dutchdog

    dutchdog

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    Great stuff wrenchy. Can you get your hands on starphire glass and can you either PM me some prices per M2,
    or benifitting members here and post m2 prices for standard glass and staphire glass?

    in

    10mm
    12mm
    14mm
    16mm
    20mm

    If u can, else PM me. :)
     
  9. OP
    dutchdog

    dutchdog

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    Should be fine.

    I believe there is an airpump pumping air in it, however then waterlevel drops as one pumps air in, then another pump with a diafragm valve sucks the air out and keeps the volume.

    Need to think about it. Indeed nasty thing of a tall tank is cleaning (long arms..) however I believe he uses a magnet to clean the top part.
     
  10. Zoom

    Zoom Retired Moderator

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    Hi @dutchdog,

    Do some extensive research on this. Do not rely entirely on the air pump supplying oxygen. There's been some extensive discussions on the forum and the general consensus here, as well as other research conducted all over the world, is that air-pumps actually provide negligible oxygenation to our tank's water column.

    As a brief run down...

    Oxygen enters our system through the process of gaseous exchange at the SURFACE of our water. This also only happens when the surface tension of the water is disturbed. Thus a filter strategically placed near the surface of the tank is a pile more effective than using an air pump, as the filter/pump/spraybar will be disturbing the water surface more than the few bubble popping.

    If you plan on running this tank as a Discus tank, you are going to have to look a lot deeper into this system than just a simple air-pump. Discus require water that is 30 degrees minimum, and the warmer the water, the less oxygen the water holds.

    Just a few thoughts to think about.
     
    Last edited by a moderator: Oct 2, 2016
  11. OP
    dutchdog

    dutchdog

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    Thanks for that. I am also looking into a boyu TL-550 tank.. I like it with the round glass.
     
  12. Reedfish

    Reedfish Moderator

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    My understanding is that the bubbles from an airpump creates surface turbulance and that provides the extra Oxygen exchange. It's not the bubbles in the water itself.

    But even with an airpump, with a limited surface area, there will be limited Oxygen exchange. And as @Zoom says, warmer water holds less Oxygen.
     
    Last edited by a moderator: Oct 2, 2016
  13. Zoom

    Zoom Retired Moderator

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    That is the science behind it. The bubbles create surface movement. But compared to a well placed filter.... The filter would work better. I also don't like the fact that in the dead of winter, I am pumping COLD air INTO the tank where I want it to be warm.
     
  14. OP
    dutchdog

    dutchdog

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    Yeah thats also true, a filter to circulate might just work better.
     

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