How to determine if glass is tempered. - The Reef Tank

Go Back   The Reef Tank > Equipment / Methodology related Forums > DIY Forum

Old 11-27-2009, 04:21 AM   #1
Fat Tony
Just send me a PM ;)
Fat Tony's Avatar
Join Date: Aug 2007
Location: In my own world, they like me here.
Posts: 16,796
Images: 12
How to determine if glass is tempered.

Hey y'all, I ran across this article the other day and figured I would share it here... I usually use the polarized glasses in the sun light, but here is a visual on how to check your glass for temper.
"Whatever you are, be a good one." Abraham Lincoln

Last edited by Fat Tony; 08-24-2011 at 07:19 AM..
Fat Tony is offline   Reply With Quote
Sponsored Links
Old 12-10-2009, 12:04 PM   #2
That's Absurd!!!
scubasteve3610's Avatar
Join Date: Jun 2009
Location: South Florida
Posts: 376
Images: 100
nice find
If I were a man with gills, would I be a fish?

110 Extra Tall Build
Head Loss Caculator
scubasteve3610 is offline   Reply With Quote
Old 12-27-2009, 06:55 PM   #3
fox2589's Avatar
Join Date: Sep 2008
Location: Indiana
Posts: 1,121
Images: 4
awesome tony!im gonna check it out-Drew
fox2589 is offline   Reply With Quote
Old 12-27-2009, 08:35 PM   #4
I've got the REEF rash!
Loverotties's Avatar
Join Date: Nov 2004
Location: New Jersey
Posts: 59,714
Loverotties is offline   Reply With Quote
Old 10-29-2010, 01:17 PM   #5
Little Fishy
BobbyRodriguez's Avatar
Join Date: Oct 2010
Location: FLA
Posts: 454
What happens if a tank is not made of tempered glass, its not suppose to have water in it i guess?
BobbyRodriguez is offline   Reply With Quote
Old 10-29-2010, 07:37 PM   #6
Little Fishy
bennyhanna1's Avatar
Join Date: Feb 2010
Location: Wisconsin
Posts: 129
I believe it more so means that you shouldn't drill it because it is more likely to crack?
"Now if you'll excuse me, I'm going to go on an overnight drunk, and in 10 days I'm going to set out to find the shark that ate my friend and destroy it. Anyone who wants to tag along is more than welcome."
bennyhanna1 is offline   Reply With Quote
Old 10-31-2010, 01:57 AM   #7
Big Fishy
Join Date: Jul 2010
Location: Houston, Texas
Posts: 773
Originally Posted by BobbyRodriguez View Post
What happens if a tank is not made of tempered glass, its not suppose to have water in it i guess?
Tempering or annealing is a way to harden the glass.
Once the glass has been tempered or annealed, it should not be drilled.
Drilling should take place prior to having it tempered or annealed.

A lot of times you will find that only the bottom panes have been tempered. Typically, if you buy the tank new, it will have a sticker that notifies you not to drill, if it is already tempered.
75 gallon mixed reef, 40 gallon breeder sump, Mag 9.5 return pump, EuroReef skimmer and 4 bulb T5HO lighting
RocketSurgeon is offline   Reply With Quote
Old 11-11-2010, 12:14 PM   #8
emkbass's Avatar
Join Date: Aug 2010
Location: Holts Summit, MO
Posts: 3,446
Images: 168
Slight correction.
Annealed glass is not hardened glass and most certainly can be drilled. Annealing is a process in which the glass is made workable for cutting, drilling etc. glass that has not been annealed would be very unstable to shock, temp changes etc.
However you are correct, tempered glass can not be drilled.
Just thought I'd let you know.
emkbass is offline   Reply With Quote
Old 04-02-2011, 07:28 AM   #9
Little Fishy
Join Date: Dec 2010
Location: Worcester, PA
Posts: 211
Very helpful link, thank you!
Julia "The Signgirl"... Diagnosed myself with addictive personality disorder, addiction to spending money on expensive hobbies.
Signgirl is offline   Reply With Quote
Old 04-15-2011, 08:56 PM   #10
Little Fishy
Shalow's Avatar
Join Date: Mar 2011
Location: Loveland CO
Posts: 148
So this is why I paid 50 bucks for polarized sunglasses I could never figure it out. lol
"One fish, two fish, red fish, blue fish" Dr. Seuss
Shalow is offline   Reply With Quote
Old 10-10-2012, 01:19 AM   #11
Join Date: Jun 2012
Posts: 4
Great find!
fyrfytr is offline   Reply With Quote
Old 10-10-2012, 02:20 AM   #12
Big Fishy
Join Date: Oct 2011
Location: Ocean Springs
Posts: 619
Won't let me see. Says I need to sign up.
Xfactor1315 is offline   Reply With Quote
Old 01-26-2014, 08:21 PM   #13
Join Date: Jan 2014
Location: Cheyenne, WY
Posts: 2

So, if I have a Tetra/Aqueon 40 breeder that I just purchased at the Petco $1 a gallon sale that has a "tempered glass" tag on the bottom, are the front, back and sides non-tempered then? I was looking on their site but couldn't find any info about it. I'd like to drill the back for a coast to coast style overflow. If anyone knows, I would really appreciate it. Thanks.
tonyrich73 is offline   Reply With Quote
Old 01-27-2014, 11:56 PM   #14
Perfeshunal Hikk
OneDummHikk's Avatar
Join Date: Dec 2007
Location: Jacksonville Florida
Posts: 8,783
Images: 274
Usually they aren't tempered, just the bottoms.
"Everybody seems to know that calcium carbonate is a phosphate binder except for those in the SW hobby" Geoff
There are 10 kinds of people, those that understand base 2 and those that don't.
Cooking Rock | Skimmer Info
OneDummHikk is offline   Reply With Quote
Old 01-28-2014, 09:26 PM   #15
Join Date: Jan 2014
Location: Cheyenne, WY
Posts: 2
That's kind of what I figured. I thought I'd just try to drill it and if it shatters, I can replace that plate of glass. I haven't set anything up with it yet big deal. Thank you.
tonyrich73 is offline   Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools

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 On

Similar Threads
Thread Thread Starter Forum Replies Last Post
how to tell if glass in a aquarium is tempered? cdemeritt General Reef Discussion 11 07-08-2013 11:04 AM
Tempered or not tempered glass??????? Orient Master General Reef Discussion 11 11-19-2007 11:57 AM
Tempered glass??? is_that_a_fish General Reef Discussion 3 02-12-2007 06:37 PM
Tempered Glass? dwall174 DIY Forum 9 08-08-2005 03:33 PM
Tempered Glass clyde72 General Reef Discussion 4 04-21-2004 08:52 PM

Similar Issues
Issue Issue Starter Forum Replies Last Post
reef tank bare bottom glass break Martinwinte General Reef Discussion 2 2013-01-09 21:32:18
how to +construct your own glass reef tank Allen General Reef Discussion 3 2001-07-21 01:11:00
diatoms on tank glass? obrut General Reef Discussion 21 2012-04-20 20:14:06
how to clean algae of glass horge General Reef Discussion 2 2000-11-09 01:00:00
how to determine current rate for marine tank? MontanaRocknReefer General Reef Discussion 4 2001-05-19 01:13:00

All times are GMT -5. The time now is 02:09 PM.

Powered by
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Our lawyer tells us that, by pressing the "New Thread" or "New Reply" button, you acknowledge that the opinions and information expressed in your article are yours alone and not those of, dba The Reef Tank. Further, you agree to indemnify The Reef Tank, its moderators, administrators and agents from any and all liability which may arise as a result of your article. (C)opyright 2006