Aquarium Glass TYPE??? - The Planted Tank Forum
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post #1 of 21 (permalink) Old 10-27-2011, 12:26 AM Thread Starter
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Aquarium Glass TYPE???

Is thre an easy way to tell if an older tank is tempered glass BEFORE I DRILL IT?

While I'm waiting for advice, I'll be looking for my safety glasses.
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post #2 of 21 (permalink) Old 10-27-2011, 02:04 AM
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i dont think there is
most that have tempered glass have it on the bottom only
if you know the make, model. you can try email them
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post #3 of 21 (permalink) Old 10-27-2011, 02:15 AM Thread Starter
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Used Tank still in my Scion XB, not sure of the brand.
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post #4 of 21 (permalink) Old 10-27-2011, 02:18 AM
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If you know anyone with a waterjet it can be done with that.
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post #5 of 21 (permalink) Old 10-27-2011, 02:24 AM
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Quote:
Originally Posted by koebwil View Post
If you know anyone with a waterjet it can be done with that.
Once tempered, glass cannot be cut by anything safely.

Even the wiki entry makes specific mention of tempered glass being unable to be cut:
http://en.wikipedia.org/wiki/Water_jet_cutter
Quote:
Materials that cannot be cut with a water jet are tempered glass, diamonds and certain ceramics.
here too
http://www.kmtwaterjet.com/glass-cutting.aspx
Quote:
Not suitable for cutting tempered glass.
I've never seen a tank with tempered glass anywhere other than the bottom. Other than on 10g tanks which could be tempered everywhere or not at all.

Larger tanks are rarely made from tempered glass anywhere other than the bottom.

What size tank is this?
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post #6 of 21 (permalink) Old 10-27-2011, 02:28 AM
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My bad, I guess I have been misinformed.
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post #7 of 21 (permalink) Old 10-27-2011, 02:31 AM Thread Starter
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The only test I know it to put on your safety gear, take deep breath, and hit it with the drill.

This one is a 75gl standard size 48x18 foot print. I picked up at dusk, really just checked to be sure it wasn't cracked. In the morning I'm going to clean it up decide what to do with it.
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post #8 of 21 (permalink) Old 10-27-2011, 02:45 AM
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Just my experience, no sort of guarantee, but I've never seen a 75g tank with tempered sides. Almost all of them have tempered bottoms.
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post #9 of 21 (permalink) Old 10-27-2011, 02:47 AM Thread Starter
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And of course you know were I want to drill ..Right?...LOL
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post #10 of 21 (permalink) Old 10-27-2011, 02:53 AM
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And of course you know were I want to drill ..Right?...LOL
I really prefer back drilled tanks, actually.

Drill in for intakes, but strainer baskets. Then for output, use bulkheads with locline fittings. Super clean.
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post #11 of 21 (permalink) Old 10-27-2011, 03:31 AM Thread Starter
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I've got an idea for a Ebb & Flow Hydroponic plant tank. I'd want the ability too completely drain the upper tank. Bottom keeps the hoses within the racking.
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post #12 of 21 (permalink) Old 10-27-2011, 03:33 AM
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You could just put the drain hole close to the bottom with a 90 degree elbow in the tank and have it go all the way to the bottom of the tank. Lots of ways to do it.
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post #13 of 21 (permalink) Old 10-27-2011, 03:45 AM Thread Starter
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True.
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post #14 of 21 (permalink) Old 10-27-2011, 03:53 AM
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If you look at a tempered panelwith polarized sunglasses you should see a pattern show up. You may have to turn your head 90 degrees as the glasses will only 'read' in one direction
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post #15 of 21 (permalink) Old 10-27-2011, 11:18 AM Thread Starter
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MrK - Thanks I'll try that
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