Shattered 29G Tank

There is little to no price difference between tempered and untempered glass. Judging by the picture it was definitely tempered glass by the way it shattered.

 

I agree with everyone else. It was definitely tempered :-/

 

I have read a lot about 29 gal tanks being tempered glass. I dropped a marineland 29 gal one time onto a small rock while cleaning it (I had it sold and told the guy I would clean it for him) and just from hitting the rock it shattered like that.

 

You can identify tempered glass with polarized glasses. You llok at the glass in a bright light, Lihe sun light. You will see a checker board pattern in the glass.

 

I just found another 29 gallon tank... it appears to be "Perfecto" brand - can anyone tell me whether or not this tank is made of tempered glass? Thanks in advance...

 

+1 one of two easy ways I know to reliably figure it out. The other is to try and cut it.

 

I used the polarized glasses+Laptop screen method on my new tank and none of the pane appear abnormal... now i just have to wait for my new drill bit.

 

Here is a picture of the new tank through polarized glasses with the white LCD screen in the back.

 

Use daylight. you will want less coherent light than an lcd produces. Look for the interference pattern

 

Daylight?? That means I have to wait for day!! haha. I noticed a lot of video guides recommending the use of an LCD screen.. but I'll try the sunlight when it appears. Any particular technique? Or just put the tank in a bright window and look at it with the glasses on?