Help!!! Scratch or crack?!?

[subzero]

I just got this 32 gallon bio cube. Passed the 24 hour leak test. When I was cleaning it up I noticed this. It’s on the inside and it feels like a scratch, however I want to make sure it’s not a crack.

 

[lpsouth1978]

Looks like a scratch to me.

 

[vetteguy53081]

Rub your nail against it. May be glue . I’ve seen this many times. Many times manufacturers pull the tube away and that thin hair like glue lands on the glass surface.
If it comes off, you then know not a crack

 

[subzero]

It was initially black - I rubbed off what I think was silicone and that’s what was left behind

 

[McCarrick]

It was initially black - I rubbed off what I think was silicone and that’s what was left behind

It's probably residue from the silicone. If your nail catches it then it's a scratch. If it's a scratch it can be buffed out. Certainly doesnt look like a crack to me though

 

[desagon]

It's probably residue from the silicone. If your nail catches it then it's a scratch. If it's a scratch it can be buffed out. Certainly doesnt look like a crack to me though

If it’s glass, it cannot be buffed out.

 

[subzero]

Yea my nail catches it

 

[1guydude]

From both sides?

 

[McCarrick]

If it’s glass, it cannot be buffed out.

Right, but the 32 biocubes as far as I know are all acrylic

 

[desagon]

Right, but the 32 biocubes as far as I know are all acrylic

I don’t think they’ve ever been acrylic. Most AIO tanks are glass.

 

[Ribo15]

Right, but the 32 biocubes as far as I know are all acrylic

I had one and swore it was glass

 

[McCarrick]

I don’t think they’ve ever been acrylic. Most AIO tanks are glass.

I had one and swore it was glass

Really? Shows what I know. My biocube 16 is acrylic for sure. So I went off of what I had seen online when I was shopping around

 

[Bobbiejoe]

Looks like a scratch to me.

Scratch.

 

[subzero]

Thanks all - also it’s Glass. from what I know all biocube are glass

 

[ca1ore]

Looks like a scratch to me. If you look at a crack at the right angle you can usually see the full thickness fissure.

 

[stacksoner]

Scratch from the hose you used to fill?

 

[subzero]

Ye

Looks like a scratch to me. If you look at a crack at the right angle you can usually see the full thickness fissure.

a this isn’t full thickness also doesn’t reflect the light randomly like you’d expect in a crack