Crack in my tank?

[MichaelTheGreat]

I was cleaning the glass on my 29 gallon tank (30”x12”x16”) and I noticed a 1.5 in scratch/crack towards the top. It is only on the outside, so its not all the way through. Should i be concerned? How can I fix it?

 

[coralbandit]

If it is just a scratch no worries. Are you sure it is not silicone?

 

[smallfry53]

I think coralbandit might be on to something there. I'd take a razor blade over it to see if it'll come off. If it is a crack, I'm guessing unless it gets worse it probably won't be an issue. If it's a crack I'd take a sharpe and make a mark at the end of it so you can see if it is getting any longer.

This actually reminds me that I noticed I had a small crack in one of my tanks after I got it all setup, cycled and fish in it.... I made a mark, and it didn't get any bigger for months, then I forgot about it until... now. lol I'll have to see if I can find it again, but about 4 years later I haven't had any issues.

 

[Brookster123]

Way the light beads in spots.. I'm thinking what bandit is thinking.

 

[MichaelTheGreat]

I think coralbandit might be on to something there. I'd take a razor blade over it to see if it'll come off. If it is a crack, I'm guessing unless it gets worse it probably won't be an issue. If it's a crack I'd take a sharpe and make a mark at the end of it so you can see if it is getting any longer.

This actually reminds me that I noticed I had a small crack in one of my tanks after I got it all setup, cycled and fish in it.... I made a mark, and it didn't get any bigger for months, then I forgot about it until... now. lol I'll have to see if I can find it again, but about 4 years later I haven't had any issues.

I could feel the indent, so im sure its not silicone. Thank you though for your help, when I get home I will mark it to see if it grows.

 

[54seaweed]

my dog loves to watch the fish so he jumps up resting his front paws on the glass he left a deep scratch in the glass used some dura bond gel filled scratch now you cant see it unless you really look for it. another trick I heard rub candle wax over scratch to fill than buff it out

 

[Brookster123]

When glass fractures it's not a clean line usually. Its off at an angle and very obvious. More like a shear than a straight cut if that makes sense. It will also push to one side. There will be a high side and low side on either side the split.

 

[Angellove78]

I was cleaning the glass on my 29 gallon tank (30”x12”x16”) and I noticed a 1.5 in scratch/crack towards the top. It is only on the outside, so its not all the way through. Should i be concerned? How can I fix it?View attachment 306134View attachment 306135

If you can feel it with your nail on the inside and outside, I'd be concerned. If it's just 1 side, I wouldn't. I have a 10 gallon that has had a stress crack on the front bottom corner for a while now. Still in use! I feel the crack on the inside but not the outside. Gotta love Walmart tanks! I just used a marker and marked where it stopped and just keep an eye on it.

 

[Autumnsky]

Dollar per gallon sale at Petco, not sure if it is still actually a dollar per gallon but cheap enough if you find you need a new tank. (40G breeder great tank size, in case you need an upgrade)

 

[Kishore]

It is above your water level. Even if it is a crack, I wouldn't bother much unless it develops.