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  #21  
Old 11-27-2012, 03:29 AM
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If it's GE, I wouldn't risk it. Too many people having problems with it lately.
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  #22  
Old 11-27-2012, 03:32 AM
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Quote:
Originally Posted by darb View Post
Anyone know if this is safe, no mention of mildew resistance? Otherwise I am going to coat the bottom of my new nanao with it in a bit ...


i wouldnt use it...
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  #23  
Old 01-15-2013, 10:36 PM
reeferfulton reeferfulton is offline
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That stuff above cleary says " for kitchen and bath " and i was under the impression that they had always used some sort of mold resistance in that variety . whether it was ge 1 or ge 2

i just rebuilt my sump and tank with GE silicon 1 . " for windows and doors"
Clearly says on the bottle " safe for contact with food "
And absolutly no mention of any sort of mold / mildew bs .

I am still weeks away from adding water to the system , but have no intention on cutting it appart to redo .

See what happens .
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  #24  
Old 01-15-2013, 11:07 PM
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How soon after using GE II are people having crashes?

a friend of mine just started up a new system ....and I told him to use it for his sump .......system has been up and running for close to 3 months now.
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  #25  
Old 02-17-2013, 02:52 AM
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http://www.canreef.com/vbulletin/sho...d.php?p=793921

I had created a topic regarding aquarium safe silicone on another forum but it has value for SW too so I'll post that same topic here.

Hope someone finds it of benefit.
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  #26  
Old 05-28-2013, 06:28 PM
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I've written several articles on the topic over the years and while I'm not going to post any of them I will post a couple of excerpt that cover what are IMO the largest misconceptions.

Quote:
100% silicone does not mean they are all the same. As an example you can buy 100% silicone that contains fungicides, you can buy a 100% silicone that feature a joint movement of 25% while another product has 12% and yet another might have 30%.

Doesn't that tell you that 100% silicone's are not all the same? The time to cure, the shear strength, elasticity, level of adhesiveness to any specific material and many other properties all vary substantially in 100% silicone products.

So what is Silicone? Well elemental silicon (as listed on the periodic table) and silicone ( polymerized siloxanes) are completely different.

The common 100% Silicone adhesives or sealants are compounds created by blending members from the family of polymerized siloxanes in various ratios and manners using a variety of solvents to achieve a broad range of 100% silicone products each expressing specific desired traits.

They can generally be broken into two categories, silicone sealants and silicone adhesives. They can usually do each others jobs with little difficulty as long as they are used well within their design limitations. Most of the product found in the hardware store are sealants, not adhesives. They are designed to seal out the weather or for doing minor repairs.
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Products can be legally labelled as 100% pure while they may actually be 99.8% pure and some solvents do not have to be considered in the equation at all even though some solvents do change traits of the final product. When it comes to chemically derived products 0.2% can sometimes make a substantial difference in its properties.
Back in the day I also used Door and Window type 1 ( a product that to my knowledge has been discontinued for years and is only found as aged stock) and it worked pretty good. Back then I ignored warnings by professionals that it was not suitable for anything over 30 gallons. It simply lacks the strength as it was never designed to be an adhesive, but rather a sealant.

I used it anyway and over the years I built, repaired, modified 100's of tanks. I got away with it until I tackled a 180 gallon and I experienced my first seam split.

The SCS1200 that Grizz mentioned is a 100% silicone construction adhesive designed for use by professional glaziers. Because of the level of damage a failed tank can do I've always taken the approach that if I need to explain it than you are not qualified to do it so I do not recommend any particular product. In house the only product we use is SCS1200. It retails for $10 a tube and flows like silk when a quality caulk gun is used. I've personally used it on over 50 salt water aquariums up to 240 gallons.
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  #27  
Old 12-11-2013, 06:41 PM
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Quote:
Originally Posted by reeferfulton View Post
That stuff above cleary says " for kitchen and bath " and i was under the impression that they had always used some sort of mold resistance in that variety . whether it was ge 1 or ge 2

i just rebuilt my sump and tank with GE silicon 1 . " for windows and doors"
Clearly says on the bottle " safe for contact with food "
And absolutly no mention of any sort of mold / mildew bs .

I am still weeks away from adding water to the system , but have no intention on cutting it appart to redo .

See what happens .
Damn. I read a bunch of threads and just purchased and used the GE 1 "for Windows and Doors". Fulton - how did your build go?
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  #28  
Old 12-11-2013, 07:00 PM
hillegom hillegom is offline
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Thank you Wildexpressions.
Very clear to me now
sealant vs adhesive
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  #29  
Old 12-11-2013, 07:14 PM
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I ordered some SCS1200 from one of our sponsors. What a difference. Great silicone. Biggest diff is almost no smell. With the other from lumber store that I have used for many years and never had a problem, but it has the strong silicone smell.

Great stuff and a
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  #30  
Old 12-11-2013, 07:57 PM
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Quote:
Originally Posted by KPG007 View Post
Damn. I read a bunch of threads and just purchased and used the GE 1 "for Windows and Doors". Fulton - how did your build go?

I used 2 tubes of it with no issues ..
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