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Old 08-20-2010, 05:25 PM   #1
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GE Silicone I for resealing?

I've used it in the past, but recently heard that they had changed the formula and that it was no longer aquarium safe. I was wondering if there is any truth to that... if someone can confirm or deny, I'd appreciate it.
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Old 08-20-2010, 05:53 PM   #2
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My brother just used it to reseal his aquarium so I hope so! lol.

I think there were problems with people not letting it sit long enough before they added water, but im not 100% sure. I think dkpate recently resealed a tank as well...?
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Old 08-20-2010, 07:48 PM   #3
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I used GE Silicone 1 For Doors & Windows. Make sure you don't get the Kitchen & Bath with Bioseal.
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Old 08-20-2010, 08:54 PM   #4
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I remember somebody saying they changed I and II around, but all the GE I I've seen has been doors and windows 100% pure silicone with no mold or mildew inhibitors
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Old 08-21-2010, 01:09 AM   #5
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From what I've heard they no longer include "safe for aquariums," etc on the label due to liability issues (I assume they did this at one time or another years ago?) Maybe that's what you're referring to?

If you're resealing anything above a 55 I'd skip GE Window & Door and go with the industrial variety (much stronger): GE RTV 100 or Dow Corning 732. To my knowledge Lowes & HD don't carry it, but Graingers should have it and if they don't it's fairly easy to buy online.
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Old 08-22-2010, 01:49 AM   #6
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Quote:
Originally Posted by ccCapt View Post
I used GE Silicone 1 For Doors & Windows. Make sure you don't get the Kitchen & Bath with Bioseal.
Right on. That's what I've bought in the past. I know to avoid anything with mold/mildew inhibitors, wasn't sure if they re-formulated the safe stuff.

Quote:
Originally Posted by Todd2 View Post
From what I've heard they no longer include "safe for aquariums," etc on the label due to liability issues (I assume they did this at one time or another years ago?) Maybe that's what you're referring to?

If you're resealing anything above a 55 I'd skip GE Window & Door and go with the industrial variety (much stronger): GE RTV 100 or Dow Corning 732. To my knowledge Lowes & HD don't carry it, but Graingers should have it and if they don't it's fairly easy to buy online.
Thanks for the tip, but not an issue at this time. The project in question is an old skool metal frame 10 gallon. Sweeeeet.
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Old 08-30-2010, 12:38 PM   #7
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GE I is no longer safe but II is. They changed them around for some reason. If you can find it, dow corning 480 silicone and DAP household adhesive sealant (use to be called aquarium sealer) work too.
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Old 08-30-2010, 12:42 PM   #8
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Pretty sure you got that backwards. GE II uses a ammonia based process to cure, and takes forever to fully cure. GE I does not. I believe you can use II as long as you let it fully cure over like 7 days, regardless you have to use the window and door type, not the kitchen and bath.
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Old 08-30-2010, 12:48 PM   #9
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Wait... hang on... another tank.... where... oh nevermind. Great idea Hun!
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Old 08-30-2010, 02:19 PM   #10
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Just last week I went to Home Depot to get some sealant for the first time. There were a number of brands that were marked as 100% silicone, yet the packaging on the back explicitly said it was not rated for aquarium use.

So I finally with with the DAP brand sealant, which is clearly marked on the package as aquarium safe.
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