Clear silicone turning white

Discussion in 'General Discussions and Advice' started by simonmcgill, 1 Oct 2012.

  1. simonmcgill

    simonmcgill

    Joined:
    18 May 2011
    Posts:
    196
    Likes Received:
    0
    Location:
    JHB
    Hi

    I was wondering if anyone has come across the same situation as me. My clear silicone on the tank holding the bracing seems to have turned a white colour. Is this normal over time or caused by pressure?
     
  2. AdS Guest




    to hide all adverts.
  3. carlosdeandrade

    carlosdeandrade

    Joined:
    24 Dec 2010
    Posts:
    8,230
    Likes Received:
    228
    Location:
    North Riding, Jozi
  4. Wes

    Wes

    Joined:
    24 Jan 2012
    Posts:
    1,428
    Likes Received:
    12
    Location:
    Randburg
    it's not marine silicone
     
  5. Wes

    Wes

    Joined:
    24 Jan 2012
    Posts:
    1,428
    Likes Received:
    12
    Location:
    Randburg
    could just be the age...
     
  6. Nemos Janitor

    Nemos Janitor

    Joined:
    7 Feb 2009
    Posts:
    8,384
    Likes Received:
    286
    Location:
    Joe's Mountain
    How old is the tank?
     
  7. simonmcgill

    simonmcgill Thread Starter

    Joined:
    18 May 2011
    Posts:
    196
    Likes Received:
    0
    Location:
    JHB
    It is fairly new. A few months old. After closer inspection it seems that there is a gap between the brace and the back panel, however fully secured on the tracks.

    I do have sliders on which creates a lot of moisture. Is it possible that the moisture and the gap could turn the silicone white.
     
  8. carlosdeandrade

    carlosdeandrade

    Joined:
    24 Dec 2010
    Posts:
    8,230
    Likes Received:
    228
    Location:
    North Riding, Jozi
  9. RiaanP

    RiaanP Moderator

    Joined:
    11 Aug 2008
    Posts:
    23,163
    Likes Received:
    1,231
    Location:
    Centurion
    age
    medicine
    additives

    any of the three

    it does change a bit over time.
     
  10. simonmcgill

    simonmcgill Thread Starter

    Joined:
    18 May 2011
    Posts:
    196
    Likes Received:
    0
    Location:
    JHB
    It is more like an opaque white
     
  11. simonmcgill

    simonmcgill Thread Starter

    Joined:
    18 May 2011
    Posts:
    196
    Likes Received:
    0
    Location:
    JHB
    I just measured the tank and it has not budged a bit so it it not expanding.
     
  12. carlosdeandrade

    carlosdeandrade

    Joined:
    24 Dec 2010
    Posts:
    8,230
    Likes Received:
    228
    Location:
    North Riding, Jozi
    Mine is opaque white too, and I know the correct silicone was used, unless I was lied too, even the parts that are not submerged are opaque white, agree with @RiaanP too.
     
    Last edited by a moderator: 26 Nov 2015
  13. simonmcgill

    simonmcgill Thread Starter

    Joined:
    18 May 2011
    Posts:
    196
    Likes Received:
    0
    Location:
    JHB
    Thanks guys really appreciate it.
     
  14. leslie hempel

    leslie hempel Moderator MASA Contributor

    Joined:
    7 May 2007
    Posts:
    14,542
    Likes Received:
    285
    Location:
    Gonubie East London
    Possibly a chemical reaction with the chemistry of the salt water, if it is bostik marine I would expect a yellow to appear and then for it to go opaque white as mentioned.

    And of course there is always the chance of an expired product being used. But let's get more pics before the alarm bells go off and fingers get pointed :)
     
  15. simonmcgill

    simonmcgill Thread Starter

    Joined:
    18 May 2011
    Posts:
    196
    Likes Received:
    0
    Location:
    JHB
    Over the weekend I did put in a product called balance from aquavitro to increase the ph levels and then cleaned the take so it could have been that.
     
  16. Nemos Janitor

    Nemos Janitor

    Joined:
    7 Feb 2009
    Posts:
    8,384
    Likes Received:
    286
    Location:
    Joe's Mountain
    On newly built tanks, especially ones that have a biggish silicone fill the joint can become stressed. This is normally when tanks have not had sufficient time to cure before filling or the the joint has so much silicone that it has not had time to set. The later can be compared to a tube of silicon. the end cures but the inner part of the tube contains uncured and usable product.

    When the tank starts to stress, the joint starts to rupture and the uncured silicone starts to cure with either water or air. Normally it is water.

    The bottom line is to get looked at and sorted before the wet silicone departs.

    Old tanks is another story. I am talking about tanks a few months old.
     
Recent Posts

Loading...
Similar Threads - Clear silicone turning Forum Date
difference between normal clear silicone sealer and the type for fish tanks General Discussions and Advice 24 Jul 2009
HAGEN AquaClear Filters Jungle Aquatics 16 Feb 2016
Clearance Sale at Yuppie Yuppie Pets 16 Jul 2015
ADA Clearance Sale! 35% Off everything, hardware also available... JungleAquatics.NET BLOG 19 Jun 2015
clear greyish gel on sand bed Nuisance Algae 18 Apr 2015
Show Aquarium Tunze Clear Out Urban Marines 7 Apr 2015
Mysterious clear slime Beginner Discussions 24 Oct 2014