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WRONG SILICONE!?!?!?!?!!!

Postby Amphilophus_Demasoni » Wed Apr 09, 2008 7:56 pm

I have a 30 gallon aquarium that had a small leak. I drained the tank, dried it up, and put some silicone rubber on the inside, and outside at the place where there was the leak. When I set the tank up again, there was no leak! It worked great! But when I added the fish, in about 4 hours, every single one of them died. I'm afraid I used the wrong kind of silicone that was obviously not aquarium safe. I used White Lighting: Silicone Rubber all purpose. 100% silicone sealant. I later realized there is a Silicone Sealant made just for aquariums that can be found in pet stores. Is my tank now useless? Can I peel the sealant and apply aquarium sealant? Will it permanently toxic my tank? Is my tank just not cycled properly or did I do something else wrong? What should I do?
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Postby Spewn » Wed Apr 09, 2008 8:15 pm

How long did you wait for the silicone to cure? Does it say anything about aquariums on the back?

Some say specifically NOT to use in aquariums. The one I bought says that it's "great for aquarium use", got it at Rona.
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Postby Amphilophus_Demasoni » Wed Apr 09, 2008 8:25 pm

I waited a whole day for it to cure. Then I put the substrate back on. and then fill it up
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Postby bentcountershaft » Wed Apr 09, 2008 8:27 pm

Most silicone take 48 to 72 hours to fully cure. I generally double what the packaging says to be on the safe side.
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Postby Amphilophus_Demasoni » Wed Apr 09, 2008 8:32 pm

So it didnt toxic my tank? I just didnt wait long enough?
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Postby teqvet » Wed Apr 09, 2008 8:47 pm

From what I am reaidng on that product, it states that mildew resistance is 'good'. Based off of that, I would have to assume it does have lethal toxins in it and you would needs to strip the tank. Someone with more knowledge on that process would be better fit to answer though. My gut says that was bad mojo though, based off the paper writing.
http://whitelightningcaulk.com/products/all_purpose/silicone_rubber/silicone_rubber_all_purpose_tds.pdf
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Postby bentcountershaft » Wed Apr 09, 2008 9:06 pm

teqvet wrote:From what I am reaidng on that product, it states that mildew resistance is 'good'. Based off of that, I would have to assume it does have lethal toxins in it and you would needs to strip the tank. Someone with more knowledge on that process would be better fit to answer though. My gut says that was bad mojo though, based off the paper writing.
http://whitelightningcaulk.com/products/all_purpose/silicone_rubber/silicone_rubber_all_purpose_tds.pdf


I tend to agree with you, the "mildew resistance" concerns me.

I'd recommend you strip it out and use GE Silicone I (not the kitchen and bath version) and let it cure for a week. Warning, it will smell terrible for a few days. If you have a garage that's where to do it.
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Postby Amphilophus_Demasoni » Wed Apr 09, 2008 10:40 pm

Can I pick this stuff up at Lowe's or Menards?
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Postby teqvet » Wed Apr 09, 2008 10:57 pm

Ge silicone I 100% silicone - clear - yes can be picked up at lowes. Make sure it DOES NOT have "bio-seal" in it. This will kill your fish, and is likely similar to the mildew resistor in your previous silicone.
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Postby Amphilophus_Demasoni » Wed Apr 09, 2008 11:31 pm

Does that mean I can pick up any kind of silicone as long as it doesn't have a mildew resisting chemical? In another words, is the mildew resistance the reason why people buy aquarium sealant? because it doesn't have that ingredient?
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Postby BillD » Thu Apr 10, 2008 12:02 am

GE silicone I for windows and doors will do the job. Never use anything that says "Kitchen and Bath" or "Tub and Tile", as they generally have mildewcides in them. Many house brands are also suitable (what I use), such as the Rona, mentioned above, that says on the tube,"ideal for aquariums".
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Postby Spewn » Thu Apr 10, 2008 3:17 pm

Amphilophus_Demasoni wrote:I waited a whole day for it to cure. Then I put the substrate back on. and then fill it up


One day isn't enough. The tube I have says to wait 2-5 days, I'll probably be waiting *at least* 5 days, more like 10. Almost 2 days later, I can still smell the "fresh" silicone smell. Not a lot, but it's there.
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Postby Cook.MN » Thu Apr 10, 2008 3:33 pm

I am redoing a top frame on one of my tanks and went down to the local hardware store and found several silicone's that stated right on the package that they are aquarium safe.

:thumb:
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Postby Fish_Fanatic » Thu Apr 10, 2008 4:30 pm

When using Ge silicon I make sure your area is well ventilated the fumes are hazardous.
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Postby Amphilophus_Demasoni » Thu Apr 10, 2008 4:39 pm

OK, but once again, does it really matter if i waited 1 day, or 1 week? if the ingredients in the product is toxic, it won't matter at all right? i mean are you saying if I waited for 1 week, the toxic stuff would come off?
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