Aquarium silicone sealant comparisons

Buckdog

Candiru
MFK Member
Jun 2, 2007
476
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48
So.Cal. - Inland
IITUFFTOBEATII;1510363; said:
for tank building/rebuiling its best to follow johnptcs advice and use the primer, this will ensure that you get the most adhesion and therefore strength, for resealing its prob not necessary.... but cant hurt, for the cost I think its worth it.

we use a lot of dow corning stuff where I work too, but nothing clear unfortunately
Thanx.
I scored some GE IS800 black today and I may have a connection to some 732 later this week. All I need now is to find is the primer.
 

Chris_LCMNH

Feeder Fish
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Feb 22, 2008
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Dr Joe;1510239; said:
I agree, if they're label changing and my stores aren't up to date :irked:, I'd like to know about it be fore I have to change product in mid-project!.

If it's in your hand and doesn't say Bio-Seal or mildew resistant blah blah blah go for it!

Dr Joe

.

I have the black GE Silicone II tubes here at work (Las Cruces Museum of Natural History). I WAS using them for a tiger salamander tank I'm working up until this thread was posted to a yahoo group (The Naturalistic Vivarium) this morning.

I've been on a quest this morning for silicone that will work for what I want to do. The application I'm doing is applying silicone over mopani wood and black waterfall expanding foam and then taking coconut coir (dry) and applying it on the silicone while wet. Unfortunately this town sucks at finding products, especially when searching for black or brown aquarium-safe silicone.

bioseal.jpg
 

Buckdog

Candiru
MFK Member
Jun 2, 2007
476
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48
So.Cal. - Inland
Chris_LCMNH;1540901; said:
http://www.dap.com/docs/msds/8642.pdf - DAP black 100% silicone: MSDS

http://www.dap.com/docs/msds/688.pdf - DAP Aquarium Sealant 100% silicone: MSDS

For the most part, per the MSDS these 2 DAP products appear to be the same. I tried calling Dow Corning (manufacturer listed on MSDS) so someone could verbally tell me the difference, but they are 7-5pm M-F eastern time. Sucks being in mnt time sometimes.
Willing to bet it's either the DC 732 or 733. Do you have a Grainger or McMaster nearby?
The DAP has an MSDS but I havent seen an actual spec sheet.
I havent seen any of the aquarium silicones in brown yet
 

kumdoalan

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Jan 28, 2008
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You know, I have been reading this whole topic, and it sounds like lots of stuff will work most of the time.

perhaps you might ask what has ever failed?

There are a few topics on the forum where we can see photos of nice big tanks that have failed and dumped water all over the house!
I would like to know what went wrong?
What type of glue/silicone has been known by someone here to have failed them?
 

Chris_LCMNH

Feeder Fish
MFK Member
Feb 22, 2008
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New Mexico
kumdoalan;1541302; said:
You know, I have been reading this whole topic, and it sounds like lots of stuff will work most of the time.

perhaps you might ask what has ever failed?

There are a few topics on the forum where we can see photos of nice big tanks that have failed and dumped water all over the house!
I would like to know what went wrong?
What type of glue/silicone has been known by someone here to have failed them?
I'm not sure if we're worried so much about failure of the silicone as much as we're worried about the safety of the tank occupants. Both fish (for obvious reasons) and amphibians (case of my tiger salamanders) are good "indicator" species of toxins, etc within water. I know in the case of GE's Silicone II I posted above that it messes with pH. I called the 800 number on the tube back in January regarding failure of the silicone to cure (remained tacky). The gentleman I spoke with asked what the application was for and I told him a personal aquarium. Long story short he said the overall main worry with using the Silicone II is the adjustment in pH from the silicone. I'm far from a fish expert, but I know biologically speaking and what little I know about fish and other aquatic life that pH can be a big factor whether something lives or not within given parameters of water (aside from nitrites, nitrates, CO2, ammonia, ammonium, etc.).
 

Chris_LCMNH

Feeder Fish
MFK Member
Feb 22, 2008
30
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New Mexico
Buckdog;1541199; said:
Willing to bet it's either the DC 732 or 733. Do you have a Grainger or McMaster nearby?
The DAP has an MSDS but I havent seen an actual spec sheet.
I havent seen any of the aquarium silicones in brown yet
Searched Dow Corning's site...

The MSDS for the black DAP 100% silicone I linked appears to be the same MSDS sheet found on Dow's site for Bronze (brown) 732 multi-purpose sealant. The specific gravity of the 2 are different. Also has different listings under the "Supplemental State Compliance Information" sections of the MSDS. :nilly:
 

Chris_LCMNH

Feeder Fish
MFK Member
Feb 22, 2008
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New Mexico
oh, and don't have a Grainger or McMaster nearby. All I have out in this "sad" town is Lowes, Home Depot, Sutherlands Lumber, McCoy's Lumber, and a few Salmon's/Do It Best Centers.

Oh and the anti-christ formerly known as Wal-Mart, but their selection of silicone, let alone anything else sucks.
 

Buckdog

Candiru
MFK Member
Jun 2, 2007
476
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48
So.Cal. - Inland
Chris_LCMNH;1541364; said:
I'm not sure if we're worried so much about failure of the silicone as much as we're worried about the safety of the tank occupants. Both fish (for obvious reasons) and amphibians (case of my tiger salamanders) are good "indicator" species of toxins, etc within water. I know in the case of GE's Silicone II I posted above that it messes with pH. I called the 800 number on the tube back in January regarding failure of the silicone to cure (remained tacky). The gentleman I spoke with asked what the application was for and I told him a personal aquarium. Long story short he said the overall main worry with using the Silicone II is the adjustment in pH from the silicone. I'm far from a fish expert, but I know biologically speaking and what little I know about fish and other aquatic life that pH can be a big factor whether something lives or not within given parameters of water (aside from nitrites, nitrates, CO2, ammonia, ammonium, etc.).
Right exactly kumdoalan. Not only did I start this thread to see if it would help folks cross reference silicone but for folks to throw out recommendations, experiences, tidbits, etc., like the one above. So far most of us has heard that the anti-mildew agent in II was harmful to fish - but in what way? Apparently it seems it is ph.
Thanx Chris.
 

filefish949

Feeder Fish
MFK Member
Mar 3, 2008
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PRK (Kalifornia)
my first post here :)

so I got a free 180 gallon tank yea! it is a jebu boo :( it has rounded corners yea :( I am working on fixing it and reinforcing the corners it is 1/2 inch glass, i am trying to pick the best sealant to counter the worst tank manufacture, from what I am reading, the strongest bond will be using dow 832 with 1205 primer... is there somthing better?
 
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