Detailed form submitted: Elda

Discussion in 'General Discussions and Advice' started by Elda, 3 Sep 2013.

  1. Elda

    Elda

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    Detailed help request
    Are you experiencing any problems in your tank?
    Not Sure
    Brief Description
    I house a red tail catfish, and need advice for a new tank!
    Tank size
    2.25m x 60cm x 60cm
    System Volume
    -
    How long has your tank been running?
    a year and a half
    What livestock do you have?
    Red-Tail Catfish, Clown Knife, Upside down Cat-fish, 2 Algae Eaters, and thousands of Guppies
    Water Parameters
    Got no Idea on the water, just know the temp is between 23 and 28 degrees C
    What lighting is over the tank?
    Blue floressant light
    Pumps and equipment
    -
    Maintenance
    Clean as often as is needed!
    Other info and photo's.
    Hi,

    I want to know if i must build a new tank for my Redtail Catfish, he is near a metre long, and makes me worry!

    I want to build a tank from Perspex, but I hear you need Marine perspex! I just need to know, if I make it about 2.25m long and 1.5m wide, with perhaps a 1m height, what thickness of perspex do i need? I worked on 20mm, but not sure if that will hold the preasure!

    I can always re-inforce it with angle iron, which isnt a issue for me, but i just need to know if this size will be enough for a growing Red-tail, or if i should go bigger?

    I also just need to know, will the perspex be a good idea? What thickness, and how do I join the perspex?

    Any help will be greatly appreciated! If you can also direct me as to where i can by the things i need, that would help just as much!

    Thank You

    Elda
     
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  3. RiaanP

    RiaanP Moderator

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    Hello and welcome Elda

    The sistersite Tropical Aquariums South Africa
    is better for freshwater specific questions.

    For the tank build, sure you should be able to get some answers here.

    For going perspex, for some reason it is expensive in South Africa. Glass tanks of that size can be done.
     
  4. viper357

    viper357 Admin MASA Contributor

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    Hi Elda

    If you have a look on our calculators page Marine Aquariums South Africa calculators you can download a glass thickness calculator there that will help you with the sizes required, although it is only for glass and not for perspex.

    Is there any particular reason why you want perpsex instead of glass? You can quite easily build that sized tank out of glass.
     
  5. the fish

    the fish

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    hi Elda using perspex is not the way to go. rather stick to glass. it is a lot stronger. and wow that is one big red tail you have. think you will have to go a lot bigger. at that size it will need a lot more swimming space. 3000x1500x1200 should work a lot better for that size fish. but if you are keen on the perspex then give maizy's a shout. Maizey Plastics Website
     
  6. butcherman

    butcherman Moderator MASA Contributor

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    you can get away with 12mm glass and a double base, if you eurobras the tank.
     
  7. 459b

    459b Moderator MASA Contributor

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    Would normal glass calculations work for keeping monster freshwater fish? I've seen catfish getting rather excited over food and bumping the glass fairly hard.
     
  8. HOT SAUCE

    HOT SAUCE

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    build the tank out if glass. and for your fish I would say make the tank at least 3 meters long. you can save money by making the tank shorter in height .. perhaps 3000 x 1500 x 700 as catfish don't really need a lot of height
     
  9. the fish

    the fish

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    is it this one you are refering to
    index.jpg

    or

    bleh.jpg

    index.jpg

    bleh.jpg
     
  10. Fuzzy

    Fuzzy

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    the first is a redtail cat... second is a tiger shovelnose
     
  11. Fuzzy

    Fuzzy

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    you also get one that is a cross of both..
     
  12. dallasg

    dallasg Moderator MASA Contributor

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  13. 4age

    4age

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    go with the thickess glass you can afford..large catfish (as in red tail catfish and tiger shovelnose) are known for swimming and bashing heaters and breaking through tank glass when excited or suprised
     
  14. kwazimoto

    kwazimoto

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    please wake up @the fish. acrylic / perspex is like 17 times stronger than glass. and why is perspex not the way to go. a lot of tanks in the US is build out of acrylic.

    give us 10 good reasons not to use perspex (without googling it). sounds like you are an expert.
     
    Last edited by a moderator: 26 Nov 2015
  15. the fish

    the fish

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    @kwazimoto acrylic used on our tanks is acrylic glass and not the plastic. the perspex she refers to is the perspex(still plastic) that you buy from mayzis. which might be more flexible but not as strong. thus saying to go with glass and not perspex. it will take a small hit from a fish of 1 meters especially a cat fish to flood your entire house with a perspex tank.
     
  16. kwazimoto

    kwazimoto

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    @the fish. bro, you have no idea what you are talking about. maybe you should use google after all, before sharing wrong information on an open forum.

    Acrylic glass or PMMA has been sold under different names. one of those names is perspex. its the same thing. and so is plexiglas, acrylite....

    how come public aquariums use acrylic for the front panes of their 10000 gal hammer shark and whale tanks? not making sense.
     
    Last edited by a moderator: 26 Nov 2015
  17. viper357

    viper357 Admin MASA Contributor

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    Kwazi, what the hell? Take it easy bud, why so aggressive? Please word your posts without the aggression or telling others to "wake up", or you can take a hike and go find another forum to be rude on.
     
  18. RiaanP

    RiaanP Moderator

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    Because in South Africa, for whatever reason, acrylic tanks cost more than glass. Its the other way around in the US.

    Plus, glass thicker than 100mm is becoming extremely heavy, and difficult to manufacture. That is why big aquariums rather use acrylic for the tanks.
     
  19. dallasg

    dallasg Moderator MASA Contributor

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    1. costs alot more than glass here in SA
    2. scratches easily
    3. if you not experienced in bonding it, can have leaks
    4. perspex SA over charges for it
    5. 2 main suppliers and neither can help you build a fish tank
    6. no lfs's use, so no acrylic cleaners readily available.
    7. glass tank 1200x500x500 R700 same tank acrylic R15 000+
    8. hard to find reference material on what thickness to use etc.

    i cant think of more, but in SA cost is the biggest factor

    having said that, acrylic does have its pro's too
     
  20. durleo

    durleo

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    Perspex and Plexiglas are both acrylic but just different brand names. Perspex used to be manufactured in South Africa but they are now importing it. You get two main flavours of acrylic - Cast Acrylic is made by pouring the molten acrylic between 2 glass sheets. It is the best one to use and that's why our skimmer bodies are made from them. It doesn't craze when glued or crack when drilled.

    The other form is Extruded Acrylic which is way cheaper but is more brittle and it doesn't take well to being drilled or glued. I would recommend using Extruded acrylic for a tank. If you want to DIY then you will also need to router the edges and read up on the proper bonding techniques with Tensol glues.
    We don't have many experienced acrylic fabricators in south Africa.
     
  21. Grand JediMaster Yoda

    Grand JediMaster Yoda

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    Kwazi, what the hell? Take it easy bud, why so aggressive?

    Anger leads to hate, hate leads to suffering…
     
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