glass chipped on the free 40B i got. can i still trust the tank? - The Planted Tank Forum
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post #1 of 16 (permalink) Old 05-05-2012, 12:38 AM Thread Starter
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glass chipped on the free 40B i got. can i still trust the tank?

the chip is on the edge of the tank where the pane of glass ends.

if you need a pic i'll snag one or two.

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post #2 of 16 (permalink) Old 05-05-2012, 01:05 AM Thread Starter
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This tanks glass is ugly. Pic for proof. How can I get rid of this? Or can I??

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post #3 of 16 (permalink) Old 05-05-2012, 02:14 AM
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You can get rid of the water marks with vinegar. If you are talking about the chip I don't know.

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post #4 of 16 (permalink) Old 05-05-2012, 02:17 AM Thread Starter
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Here's a pic of the chip.

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post #5 of 16 (permalink) Old 05-05-2012, 03:08 AM
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I'm not sure what I'm looking at ....
Is that an air line across the top? Oh, or is this pic turned 90 degrees?

Regardless, my vote would be to sell the tank for a couple bucks on craigslist as a reptile cage and get a new one. What's a 40b going for these days? 50-60 bucks? I'd sure sleep better at night with a solid tank!

Update:
Ok, I see it! It's like one of those magic-eye pictures. ;-) I'd for-sure not use it. It looks like the crack is going to propagate farther down the glass and toward the bottom.
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post #6 of 16 (permalink) Old 05-05-2012, 03:10 AM Thread Starter
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You really can't tell what you're looking at there? -_- turn the pic to the right. It's the side of the tank with a chip in it. That's water in the bottom right corner of pic as is...

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post #7 of 16 (permalink) Old 05-05-2012, 03:13 AM
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I'd still use it if it is shelled. If the chip is very jagged it could be a stress point and form a crack. I've got a much bigger chip out of my bottom pane of my 165. The silicone looks very good from that one pic. People are always worried about little chips when the silicone is what fails 99% of the time. I've actually never seen a broken tank that just blew out. Only split seams.

Try to get me two more angles, one from the other side and one at a 45 degree - straight at the corner.


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post #8 of 16 (permalink) Old 05-05-2012, 03:18 AM Thread Starter
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Sorry for the pics being flipped the wrong way. Can't fix from my phone.

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post #9 of 16 (permalink) Old 05-05-2012, 03:21 AM Thread Starter
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post #10 of 16 (permalink) Old 05-05-2012, 03:23 AM
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I think you are good man.


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post #11 of 16 (permalink) Old 05-05-2012, 03:23 AM Thread Starter
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No crack. Just the chip and it only seems to be where the silicone is covering on the inside.

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post #12 of 16 (permalink) Old 05-05-2012, 05:45 AM Thread Starter
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your vinegar tip isn't working. I see why they gave this tank away... This has to come off with something.

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post #13 of 16 (permalink) Old 05-05-2012, 05:47 AM
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Try razor blades. Only fresh ones though, use a new one every couple swipes and hopefully you can get the angle just right to get under it. Wet it for lube.

Let the vinegar sit too, it needs some time to work at it. You can drape soaked paper towels over it, or turn the tank on its side and use the rim as a dam and pour a small pool of vinegar on the glass.


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post #14 of 16 (permalink) Old 05-05-2012, 06:47 AM
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That chip looks like a shallow scoop of a shell shape. This sort usually does not propogate, though seeing it so low might be a worry. I have a similar chip, but near the top of the waterline on a 45 gallon (4' long) tank.

Stronger acids:
WEAR GLOVES:
Dampen the mineral deposits with lemon juice.
Sprinkle on Citric Acid (sold in grocery stores as 'Sour Salt', it is the stuff on 'sour gummy worms')
Keep it damp with paper towels well soaked with lemon juice.
Attack with a razor blade about every 15-30 minutes, then re-apply the lemon juice and citric acid.
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Coca Cola
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CLR (a cleaning product available at hardware stores. The CLR stands for Calcium, Lime, Rust).
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Even stronger, go to a swimming pool supply or masonry supply and get stronger material. Use safety equipment like eye protection, and follow all label directions.
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If none of these work, then the glass itself is hazed, and I do not know if there is a cure, short of selling the tank.
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post #15 of 16 (permalink) Old 05-05-2012, 08:48 AM
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Youre scratches arent coming off with vinegar, blades, clr or anything else. I picked up some used tanks a while back and learned that lesson after numerous cleaning attempts. Your best bet it to use a compound and a buffer and even that is a huge effort. Good luck
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