Go Back   Aquarium Advice - Aquarium Forum Community > General Aquarium Forums > General Hardware/Equipment Discussion
Click Here to Login

Join Aquarium Advice Today
Reply
 
Thread Tools Search this Thread Display Modes
Please support our sponsors and let them know you heard about them on AquariumAdvice.com
 
Old 10-27-2014, 06:09 AM   #1
Aquarium Advice Newbie
 
Join Date: Oct 2014
Posts: 7
Cracked glass

I recently acquired a 45 gal tank with a crack on the bottom glass. What I'm wondering is if I can repair the existing glass and have it be strong enough to not crack in that panel again


Sent from my iPod touch using Aquarium Advice
__________________

__________________
taker101 is offline   Reply With Quote
Old 10-27-2014, 11:11 AM   #2
AA Team Emeritus
 
Join Date: Jun 2005
Location: Whitby, Ont,Canada
Posts: 2,755
Not knowing the exact nature of the crack, it is difficult to say how it would be best repaired. A patch may work fine, or a patch on both sides, inside and out, or perhaps a new bottom placed inside the tank might be a better solution. Of course, you can remove the bottom and replace it as well. I personally have no qualms about patching a tank.
__________________

__________________
Join a fish club. Don't have one in your area? Start one.
BillD is offline   Reply With Quote
Old 10-27-2014, 11:41 AM   #3
Aquarium Advice Addict

POTM Champion
 
Join Date: Apr 2014
Location: Southern Cali
Posts: 1,734
repairing a cracked bottom plate is not going to work, at least not reliably.
Replacing the bottom plate requires taking the tank apart, buying the glass (tempered, twice the thickness of the side panels) and getting it all back together again.

In my mind it may be easier/less expensive or almost the same cost to just purchase a new tank.
__________________
PB_Smith is offline   Reply With Quote
Old 10-27-2014, 12:35 PM   #4
AA Team Emeritus
 
Join Date: Jun 2005
Location: Whitby, Ont,Canada
Posts: 2,755
Quote:
Originally Posted by PB_Smith View Post
repairing a cracked bottom plate is not going to work, at least not reliably.
Replacing the bottom plate requires taking the tank apart, buying the glass (tempered, twice the thickness of the side panels) and getting it all back together again.

In my mind it may be easier/less expensive or almost the same cost to just purchase a new tank.
Sorry, this isn't true. The bottom pane doesn't need to be tempered, nor does it need to be thicker. In fact the opposite is true in terms of thickness if you use tempered glass. As well the tank doesn't need to be taken apart to replace the bottom. It can be fixed reliably in in most cases with a patch. The local Big Al's has a 740 gal tank with a patch on the bottom. It has been patched for many years.
__________________
Join a fish club. Don't have one in your area? Start one.
BillD is offline   Reply With Quote
Old 10-27-2014, 01:00 PM   #5
Aquarium Advice Addict

POTM Champion
 
Join Date: Apr 2014
Location: Southern Cali
Posts: 1,734
Quote:
Originally Posted by BillD View Post
Sorry, this isn't true. The bottom pane doesn't need to be tempered, nor does it need to be thicker. In fact the opposite is true in terms of thickness if you use tempered glass. As well the tank doesn't need to be taken apart to replace the bottom. It can be fixed reliably in in most cases with a patch. The local Big Al's has a 740 gal tank with a patch on the bottom. It has been patched for many years.
You are generally correct, but even though you do not have to take every panel apart, it is still a major undertaking to remove/replace the bottom plate, even more so if there is a frame attached....
so let's just say we are both right.

It also really depends on where, how long, and what direction of the crack as to whether or not a patch will hold.
If it is a crack in a corner or something, sure I can see a patch working, but if the crack bisects the middle portion of the plate, I simply wouldn't risk it failing.
Also an incomplete crack will continue to run, putting a patch on it will do absolutely nothing to prevent that. The only way to fix it is to go through the trouble of drilling the crack, patching it, etc. like is done with car windshields, only problem is most tanks use tempered glass for the bottom and tempered can't be drilled, at least not by most hobbyist.

Not knowing the specifics of the tank in question, I opted for giving the "safe" answer.

If it were a 740 gallon tank then the impetus too patch it would be considerably greater, but a 40-50 gallon tank can be had anywhere and rather inexpensively.

Whenever you consider things like craigs list, Petco $1-a-gallon sales, etc., etc. and how much the OP's time is worth, it quickly becomes easy to see that in the long run it would be cheaper and safer to simply purchase another tank.
__________________
PB_Smith is offline   Reply With Quote
Old 10-27-2014, 01:15 PM   #6
AA Team Emeritus
 
Join Date: Jun 2005
Location: Whitby, Ont,Canada
Posts: 2,755
Whether an incomplete crack will run is debatable. I have a tank like that I patched about 5 years ago, and the crack has not grown. It isn't on the bottom, but the back where there is flexing. Of course, buying a new tank is an option. Whether it is inexpensive is a relative thing. Not everyone has the coin to scrap an otherwise good tank and buy a new one. Most of my tanks were bought as leakers, very inexpensively. It took some time to repair them, for sure, but the total outlay was very small. I love people who can afford to pitch tanks because of a little leak.
Keep in mind also that new tanks sometimes leak, shortly after purchase. Most of my leakers were tanks returned to the store under warranty.
I will agree that sometimes the cost makes repair prohibitive.
__________________
Join a fish club. Don't have one in your area? Start one.
BillD is offline   Reply With Quote
Old 10-27-2014, 01:37 PM   #7
Aquarium Advice Addict

POTM Champion
 
Join Date: Apr 2014
Location: Southern Cali
Posts: 1,734
Quote:
Originally Posted by BillD View Post
I will agree that sometimes the cost makes repair prohibitive.
I agree, and I am certainly well within the category of "can't afford to just buy a new one", but I was considering the cost of the glass if replacing the bottom, silicone and then the time/labor involved and the Op would easily be at or above the $50-$60 I'm sure he could get another tank for.

If it were a larger tank then for sure it would be worth it to try to patch it, but a tank the size of the OP's just all around doesn't seem worth it in my eyes, unless of course it is a minor crack in a corner or similar.

A picture would help immensely in providing good, specific advice.
__________________
PB_Smith is offline   Reply With Quote
Old 10-27-2014, 01:48 PM   #8
AA Team Emeritus
 
Join Date: Jun 2005
Location: Whitby, Ont,Canada
Posts: 2,755
I can't argue with the need to look at cost versus benefit. If you have to buy a large piece of glass, it will likely be cost prohibitive. I happen to have some pieces of 3/16" and 1/4" glass lying around that allow me to eliminate that from the equation. What I don't have is thicker glass for larger tanks. I do know someone who does though, and silicone is cheap.
__________________
Join a fish club. Don't have one in your area? Start one.
BillD is offline   Reply With Quote
Old 10-27-2014, 01:57 PM   #9
Aquarium Advice Addict

POTM Champion
 
Join Date: Apr 2014
Location: Southern Cali
Posts: 1,734
I have found that the pre-cut pieces of glass and acrylic/plastic for picture frames at Home Depot to be perfect for small repairs and only cost a few $$ at most.




OH YEAH!!!
VERY IMPORTANT!
To the OP, if you do attempt to patch it, all patching MUST be done on the inside of the tank, especially any bottom patches.
That way you are utilizing the water pressure to hold it against the glass.
If patched on the outside of the tank, that same water pressure will be applied to pushing the patch off the glass.
__________________
PB_Smith is offline   Reply With Quote
Old 10-27-2014, 02:37 PM   #10
Aquarium Advice FINatic
 
Ricky 1's Avatar
 
Join Date: Sep 2014
Location: Nottingham
Posts: 799
Perhaps a photo of the crack would give us a better idea, is this possible T........
__________________

__________________
missing my fish.......
Ricky 1 is offline   Reply With Quote
Reply

Tags
crack, glass

Please support our sponsors and let them know you heard about them on AquariumAdvice.com

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Opionions on cracked glass (amazing picture included)... Corey Freshwater & Brackish - General Discussion 4 04-16-2006 02:10 AM
Glass aquarium cracked minotaur Saltwater Reef Aquaria 5 03-24-2006 11:39 PM
Cracked Glass Yuri Freshwater & Brackish - General Discussion 4 01-01-2006 01:26 AM
Heater glass cracked and broke??? MoxieGrrrl Freshwater & Brackish - General Discussion 5 02-07-2005 03:27 PM
New 40g reef (and a few fish) tank!! But cracked glass? austinsdad Saltwater & Reef - Getting Started 7 01-25-2005 11:26 AM







» Photo Contest Winners








Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -4. The time now is 09:18 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.