glass and stuff

Discussion in 'The Sump' started by scubaninja, 10 May 2009.

  1. scubaninja

    scubaninja

    Joined:
    20 Jul 2008
    Posts:
    6,739
    Likes Received:
    21
    Location:
    Durban
    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
    Posted via Mobile Device
     
  2. AdS Guest




    to hide all adverts.
  3. scubaninja

    scubaninja Thread Starter

    Joined:
    20 Jul 2008
    Posts:
    6,739
    Likes Received:
    21
    Location:
    Durban
    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?;)
    Posted via Mobile Device
     
  4. shane

    shane

    Joined:
    1 Jun 2007
    Posts:
    668
    Likes Received:
    0
    Location:
    durban
    Hey scuba,
    Adding more sand in your dt for that twin spot?
    Cheers
     
  5. scubaninja

    scubaninja Thread Starter

    Joined:
    20 Jul 2008
    Posts:
    6,739
    Likes Received:
    21
    Location:
    Durban
    not a chance, that is goin on a spit;) just findin out some stuff for a certain tank...
    Posted via Mobile Device
     
  6. jacquesb

    jacquesb Retired Moderator

    Joined:
    29 May 2007
    Posts:
    17,868
    Likes Received:
    69
    Location:
    Cape Town
    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. scubaninja

    scubaninja Thread Starter

    Joined:
    20 Jul 2008
    Posts:
    6,739
    Likes Received:
    21
    Location:
    Durban
    thankS jb. got any idea how much stronger?
    Posted via Mobile Device
     
  8. Warr7207

    Warr7207

    Joined:
    28 Dec 2007
    Posts:
    12,781
    Likes Received:
    31
    Location:
    JHB
    Very, very brave :p
     
  9. Tridan

    Tridan

    Joined:
    15 Sep 2007
    Posts:
    1,910
    Likes Received:
    9
    Location:
    Kei Mouth
    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 MASA Contributor

    Joined:
    14 Dec 2008
    Posts:
    16,771
    Likes Received:
    582
    Location:
    Sandton
    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 MASA Contributor

    Joined:
    14 Dec 2008
    Posts:
    16,771
    Likes Received:
    582
    Location:
    Sandton
    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. scubaninja

    scubaninja Thread Starter

    Joined:
    20 Jul 2008
    Posts:
    6,739
    Likes Received:
    21
    Location:
    Durban
    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

    Joined:
    24 May 2007
    Posts:
    11,984
    Likes Received:
    119
    Location:
    North of Durban and South of Mozambique
    Tagging... Lol
     
  14. scubaninja

    scubaninja Thread Starter

    Joined:
    20 Jul 2008
    Posts:
    6,739
    Likes Received:
    21
    Location:
    Durban
    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

    Joined:
    24 May 2007
    Posts:
    11,984
    Likes Received:
    119
    Location:
    North of Durban and South of Mozambique
    Yes, it does work :whistling:
     
  16. scubaninja

    scubaninja Thread Starter

    Joined:
    20 Jul 2008
    Posts:
    6,739
    Likes Received:
    21
    Location:
    Durban
    thanks sean. you are my hero. now can you post a link:)
    Posted via Mobile Device
     
  17. Warr7207

    Warr7207

    Joined:
    28 Dec 2007
    Posts:
    12,781
    Likes Received:
    31
    Location:
    JHB
    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

    Joined:
    24 May 2007
    Posts:
    11,984
    Likes Received:
    119
    Location:
    North of Durban and South of Mozambique
    Only when I RECEIVE Alida's moonlights:whistling:
     
  19. scubaninja

    scubaninja Thread Starter

    Joined:
    20 Jul 2008
    Posts:
    6,739
    Likes Received:
    21
    Location:
    Durban
    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
    [​IMG]
     
  20. lIghty

    lIghty

    Joined:
    3 Nov 2007
    Posts:
    5,053
    Likes Received:
    52
    Location:
    Westville, Durban
    cool, make you wonder how they can breathe?
     
  21. scubaninja

    scubaninja Thread Starter

    Joined:
    20 Jul 2008
    Posts:
    6,739
    Likes Received:
    21
    Location:
    Durban
    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
     
Recent Posts

Loading...
Similar Threads - glass stuff Forum Date
scoring/cutting 10mm glass Anything DIY Related Monday at 20:42
Glass thickness again Anything DIY Related 1 Dec 2016
Spotless back glass General Discussions and Advice 29 Oct 2016
Glass Suction Cups The Sump 27 Sep 2016
Help with fatty sucction cup mark on new tank glass Anything DIY Related 24 Sep 2016
Glass drill General Discussions and Advice 11 Jul 2016
Glass cleaning techniques General Discussions and Advice 4 Jul 2016