glass and stuff

Discussion in 'General Off Topic chats' started by scubaninja, 10 May 2009.

  1. scubaninja

    scubaninja

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    hey guys, how much stronger is starfire than normal glass? if i was thinkin of buildin a deep tank and the calculator said i needed for example 20mm glass, what thickness of starfire would i need? there an accurate ratio or somethin? and besides the visual aspects and the downfall of cost, what are its advantages? and does anyone know why skimmers are circular instead of square? i have my own assumptions but just wanted to hear other input
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  3. OP
    scubaninja

    scubaninja

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    ok some more, does anybody know how deep wrasses actually burrow? i know this was discussed a while back but can't remember where and if you intended to have an in display dsb, plenum i think it is? couldn't you make the sand a bit deeper to cope with the burrowing? and does anyone know how to calculate the thickness of concrete for walls of tanks that can also cope with big waves? where's sean on this?;)
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  4. shane

    shane

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    Hey scuba,
    Adding more sand in your dt for that twin spot?
    Cheers
     
  5. OP
    scubaninja

    scubaninja

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    not a chance, that is goin on a spit;) just findin out some stuff for a certain tank...
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  6. jacquesb

    jacquesb Retired Moderator

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    Scuba - wrasses (according to my knowledge) usually goes in to +-3/3.5cm....... sometimes shallower..... Regarding starfire - my 1.2 metre is starfire..... (Some people are going to slate me for this ;)) - BUT, the glass is only 8mm.... and it's 800mm high....
    I don't have any bracing on the tank - and have had the tank FULL of water now, for the past 10 years (without bracing).
    It does have a "plastic frame around the tank" - at the top (+-10cm)....

    So - personal experience - it SEEMS to be quite strong ;)
     
  7. OP
    scubaninja

    scubaninja

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    thankS jb. got any idea how much stronger?
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  8. Warr7207

    Warr7207

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    Very, very brave :p
     
  9. Tridan

    Tridan

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    Scuba please dont quote me on this as i have searched for two days for the article i read years ago about glass.

    As far as i remember low iron glass was vertically up to 30% stronger than float glass, as it has a higher density, or a lower density, cant remember, only thing i can remember is my name and that low iron was stronger.

    HTH
     
  10. dallasg

    dallasg Moderator

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    when i started building with glass i emailed PPG , the manufacturer of Starphire, the low-iron glass that is being supplied for my project. A technical staff member stated that there is no difference is material strength properties of low-iron glass and regualr annealed glass.
    i will try and find the reply i had and post it
     
  11. dallasg

    dallasg Moderator

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    i found the one email, if u would like me to forward it, pm me your email address

    here is the short and sweet reply
     
  12. OP
    scubaninja

    scubaninja

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    thanks bud. its cool though, if there is no strength difference and you are tight on cash starfire is purely for looks in my book
     
  13. seank

    seank

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    Tagging... Lol
     
  14. OP
    scubaninja

    scubaninja

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    Hey your post count is big enough already!!!
    YOu



    Dont





    Need





    MOre:razz:
    Sean, could you enlighten a bit on the concrete calculator at all?
     
  15. seank

    seank

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    Yes, it does work :whistling:
     
  16. OP
    scubaninja

    scubaninja

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    thanks sean. you are my hero. now can you post a link:)
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  17. Warr7207

    Warr7207

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    Speak to the tankbuilder pros, like Bob the reefbuilder, he reckons the thinner starfire glass (10mm) doesn't make enough of a visual difference to warrant the extra cost.

    It makes a huge difference when they are making those 20mm braceless tanks.
     
  18. seank

    seank

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    Only when I RECEIVE Alida's moonlights:whistling:
     
  19. OP
    scubaninja

    scubaninja

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    Ok, i found out how deep wrasses go :) do to a calamity i found this out so i its bittersweet, this is a pic of a 2 spot wrasse, about 15cms long, hiding under the sand. In the pic you can see a bit of his head and his body followed from the left.
    He was about an inch and a half down
    10474a11c613c809f.jpg
     
  20. lIghty

    lIghty

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    cool, make you wonder how they can breathe?
     
  21. OP
    scubaninja

    scubaninja

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    yeah i wonder that myself. I know that some create a sack of mucus stuff around them and dos in that, but i dunno. doesnt really keep me awake at night :p
     

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