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The brand that is definitely 100% silicon is called Silicon I and is made by G.E. (?) and is currently available at my local Wal-Mart.

The issue withsilicon is not to buy any that say "mold/mildew resistant" as these have an inhibitor in them made from slow release arsenic! At least, that's what I've been told.

I would assume any 100% silicon is safe, with the above exception.
 

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Dow Corning - "732"
Rtv Sealant
100% silicone Rubber
Acetic acid is released durning application and curing.
Commerical and aquariums

GE Silicone
Constructiion
1200 Series Sealant
Acetic acid is released durning application and curing
Used by All-Glass and other manf.
Manf. and sold for contracters use only.
Reason - may cause reproductive systems effects and Liver enlargement.

Smokey
 

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from GE about GE I:

DISCLAIMER: THE MATERIALS AND PRODUCTS OF THE BUSINESSES MAKING UP THE GE PLASTICS UNIT OF GENERAL ELECTRIC COMPANY, ITS SUBSIDIARIES AND AFFILIATES (GEP), ARE SOLD SUBJECT TO GEPS STANDARD CONDITIONS OF SALE, WHICH ARE INCLUDED IN THE APPLICABLE DISTRIBUTOR OR OTHER SALES AGREEMENT, PRINTED ON THE BACK OF ORDER ACKNOWLEDGMENTS AND INVOICES, AND AVAILABLE UPON REQUEST. ALTHOUGH ANY INFORMATION, RECOMMENDATIONS, OR ADVICE CONTAINED HEREIN IS GIVEN IN GOOD FAITH, GEP MAKES NO WARRANTY OR GUARANTEE, EXPRESS OR IMPLIED, (I) THAT THE RESULTS DESCRIBED HEREIN WILL BE OBTAINED UNDER END-USE CONDITIONS, OR (II) AS TO THE EFFECTIVENESS OR SAFETY OF ANY DESIGN INCORPORATING GEP MATERIALS, PRODUCTS, RECOMMENDATIONS OR ADVICE. EXCEPT AS PROVIDED IN GEPS STANDARD CONDITIONS OF SALE, GEP AND ITS REPRESENTATIVES SHALL IN NO EVENT BE RESPONSIBLE FOR ANY LOSS RESULTING FROM ANY USE OF ITS MATERIALS OR PRODUCTS DESCRIBED HEREIN. Each user bears full responsibility for making its own determination as to the suitability of GEPs materials, products, recommendations, or advice for its own particular use. Each user must identify and perform all tests and analyses necessary to assure that its finished parts incorporating GEP materials or products will be safe and suitable for use under end-use conditions. Nothing in this or any other document, nor any oral recommendation or advice, shall be deemed to alter, vary, supersede

We don't recommend any of our products for underwater submersion, but some aquarium manufacturers do choose to use our products on glass to glass aquariums. The products they use most often are RTV108 or IS808. These are industrial grade products. Our consumer grade (this means they would be found at Home Depot or a local hardware store) offset to these industrial grade products is GE012A (Window and Door Silicone I).
 

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not at all...I work in a hospital...and never worked for them. Just something they sent me long time ago and figured i'd post it. GE II has better all round (plastics, rock...etc.) adhesive properties than GE I. Although GE I and II rate glass binding at 7, GE I holds glass better (and this is not GE telling me this, I discovered this myself along with many others. Both can be used, you just need to get the windows and doors (blue tube) and not bath and kitchen (red tube, has mildew prevention, fungicides..etc.). The one difference between GE I and II besides binding properties is the way they cure. GE I cures via acetic acid and GE II via ammonia. I just figeured I'd post this stuff to clear the confusion I thought everyone had known. The disclaimer about not for aquariums is, from what i had known to be circulating (not sure of the truthfulness about it though) is that GE was sued when a big aquarium fell apart and lots of water damage...etc. to this persons house. Now the questions remains whether this person applied the silcone properly and allowed it to cure properly before water was added. I know i leave it for at least a week. From what i've heard (again not sure of its validity) is that AGA uses GE I and the disclaimer previosly mentioned seems to point that without naming AGA. Take all this for whats its worth...just additional information. I've always used GE I without problems and many advanced reefers use it to. Hope this clears it up.
 

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What about the GE Silicone II 100 percent clear window and door formula is that safe for aquariums??
 

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Technically, the "100% sillicon" is misleading. They are not "100% sillicone" if arsenic is added to prevent mildew and fungus. However, it is my personal belief that the amounts of arsenic would be very insignificant. There is arsenic in normal tap water, just in very small amounts. However, I still wouldn't use it myself.

Does anyone know if the tube of GE I sillicon claims to be food safe?

I think the best would be something food safe and aquarium safe... I don't know about that DAP product...
 

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DAP 100 % silicone has the same MSDS sheet as their aquarium sealant, its on their web site (DAP.com) The big tube does state its food safe, and on the front it says water proof. On the back it says not for continous underwater use, although MSDS wise its the same as the aquarium tube. Im using it. Its a blue tube.
 

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Well I went today and bought GE Silicone II - Window & Door. Nowhere on the bottle does it say that it's mildew/fungus resistant. I was considering going out tomorrow and getting Silicone I since it seems to be the most recommended, however after readings mars23's post i think I'm gonna just stick with the II. I think the only difference is that II is supposed to be stronger than 1, and they release different gases as they cure. I have to go back to Home Depot tomorrow anyway because I forgot something...so I'm still comtemplating whether or not to go through with using II.
 

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GE Silicone I is the same exact product, dispensed by the same machines that is used by professional aquarium manufacturers and sold to your LFS. GE can no longer say their GE I is for aquariums because they repackage the product and sell it to your LFS and charge an arm and a leg for it. GE Silicone II, I'm almost positive it has agents in it to prevent mildew and those agents are lethal to fish. DO NOT use Bath&Tub sealant it is NOT aquarium safe because of fungicides and anti-mildew agents. Silicone I is not only aquarium safe but it's the same exact product used by aquarium manufacturing companies. You have to love that legal BS trying to make you pay more for the same product in a different color tube.... :?
 

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So I guess, to summarize~use GE Silicone I Window & Door in the blue tube as a first choice~GE Silicone II as a slightly less desireable option.
:)
 

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Not to good then, I just got finished siliconing a 100g tank with Ge Silicone II Kitchen and bath. The guy working at home depot told me it was the same thing as the small tube of DAP aquarium silicone I was holding( I was just looking for something I could put in a caulking gun.) According to this disscussion, I should not have used this. This is a 100g tank that ties in with 2 other tanks.

What can I do? Do I scrape the silicone out after it cures?
HELP!!
 

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I would imagine scraping all the exposed silicone away and recoating w/ the Window & Door version of I or II would be fine as the new silicone should keep any harmful agents from the "bad" silicone to leach through.
Good Luck :)
 

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I design 3~D backgrounds and started out with All Glass Silicone. I ran out and called All Glass. The customer Service Rep told me it was safe to use any CLEAR silicone. Had to be clear. So I have had great luck with it. It is also about $5.00 a tube cheaper than All Glass. :D
 

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Holy ****, my GE Silicone I is taking forever to cure. It's been a week and I can still get a whiff of the acetic acid! :x

Is there any way to speed up the curing process? Blowing a fan on it maybe?
 

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Hmmm, should only take 48 hours unless you used a very thick amount in certain areas :-?
 
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