The Planted Tank Forum banner

Bubbles in my silicone- should I be worried?

12569 10
During my weekly water change, I noticed that all four corner seals are riddled with bubbles. Most are small, but some are over half a centimeter. I don't know how long they've been there- I just noticed them today, but I bought the tank off Craigslist about 18 months ago, so there's no telling how old the tank is. Should I be worried? Am I going to come home from work some day soon to find 30 gallons of water soaking my landlord's carpet?

Attachments

1 - 11 of 11 Posts

·
Registered
Joined
·
1,113 Posts
Those look like the excess silicone that was spread near the corners. As long as you do not/or have minimal bubbles where the edge of the glass is sealed to the other glass, then you should be fine.
 

·
Registered
Joined
·
147 Posts
It looks to me like someone resealed that tank at some point and did not prep the surface correctly. Not sure I would trust it but take a few pictures and make sure it is not spreading.
 

·
Plant Whisperer
Joined
·
2,547 Posts
The important part is where the glass butts up against another pane of glass. The bit that spills over that has the bubbles in it does not keep the tank together. It is just aesthetic not structural.
 

·
Registered
Joined
·
2,428 Posts
I mostly agree with Zapins, but my fear would be that those bubbles would allow for further degradation. Like a loose thread in clothing, not a huge deal until it eventually starts to unravel.

Personally, I'd be looking for a new tank, but I guess it depends on how risk averse you are :)

Sent from my Nexus 6 using Tapatalk
 

·
Registered
Joined
·
463 Posts
I mostly agree with Zapins, but my fear would be that those bubbles would allow for further degradation. Like a loose thread in clothing, not a huge deal until it eventually starts to unravel.

Personally, I'd be looking for a new tank, but I guess it depends on how risk averse you are :)

Sent from my Nexus 6 using Tapatalk
Beat me to it, was gonna say the same thing.
 

·
Registered
Joined
·
21 Posts
Discussion Starter · #8 ·
Thanks for all your input, guys! There's so much good advice on this forum, and I'm really grateful. :) I think I'll measure and monitor the bubbles. If I see any further degradation, I'll go buy a new tank.
 

·
Plant Whisperer
Joined
·
2,547 Posts
I had a 55g tank that lost the silicon completely except for the little bit between the panes of glass. No leaks/floods for about 8 years of having it. If the bubbles get between the glass then maybe think about a new tank, and even then that isn't a deal breaker. I had a 90g tank with a bubble between the glass and no issues for many years. Tanks are surprisingly resilient.
 

·
Registered
Joined
·
4,067 Posts
It's probably fine, but you could cut out all the visible silicone, leaving the bits that glue the glass together. Then reseal it after masking where no silicone should go. Pull masking tape off as soon as you are done applying silicone. Let it stand for 2 days or so to cure.THis is only a second seal, the structural bonds are between the pieces of glass. There you want no bubbles.
 
1 - 11 of 11 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top