Water pressure question

[Shaddow_wolf169]

Oh... I thought you were looking at using this for a smaller aquarium with a sump. It may seem like a great deal but I wouldn't use it as is. Get the bad section cut out or find a different tank.

+1

 

[cb684]

An option would be to remove the silicone around the cracked side (keeping the side glued to the rest of the aquarium) and glue a glass piece on top of that side, on the inside of the aquarium (covering it completely). Basically, doing what you envisioned but without leaving any space. I have done that to fix cracks in smaller tanks (20 and 40 gallons).

I don't think it will look good but it may do the trick.

 

[Cory]

An option would be to remove the silicone around the cracked side (keeping the side glued to the rest of the aquarium) and glue a glass piece on top of that side, on the inside of the aquarium (covering it completely). Basically, doing what you envisioned but without leaving any space. I have done that to fix cracks in smaller tanks (20 and 40 gallons).

I don't think it will look good but it may do the trick.

Yeah that would work too. I think im going to take it apart and cut the glass smaller and reseal the whole tank.

 

[rcpalmer1]

That would be a good idea. I built a 200 gallon out of 1/2 plate glass. That is 1700+lbs of water. I blocked of about 6 inches in the two back corners for my overflow and return. I used 1/4 acrylic. The space behind the acrylic was empty but it held. My wife made me keep it filled with water in the garage for a month before I could put it in the house. Thinking back, that was a good idea.

 

[Cory]

That would be a good idea. I built a 200 gallon out of 1/2 plate glass. That is 1700+lbs of water. I blocked of about 6 inches in the two back corners for my overflow and return. I used 1/4 acrylic. The space behind the acrylic was empty but it held. My wife made me keep it filled with water in the garage for a month before I could put it in the house. Thinking back, that was a good idea.

Lol about the garage.

This thing was so heavy We (5 of us) would have broken it taking it to the basment. So its a good reason to cut it and resilicone it.

What silicone did you use? Siliconing i suck at. How much of a space did you leave between the panes? Did you compress it or just push it together and tape it to dry?

 

[rcpalmer1]

I used CR Laurence aquarium silicone. I just put a solid thick bead and taped it. After it dried I just trimmed it with a razor.

 

[GK3]

I definitely agree with everyone's assessment on not using a cracked tank. Take a piece of duck tape and try to pull it apart, I bet you can't. Put a nick in the middle and try again, I'll bet the piece rips across the middle starting with the nick you created. Well glass is the same way. Once you put a small crack in it, the structural integrity goes waaaaay down. A small crack will just grow and grow under pressure.

 

[Cory]

I definitely agree with everyone's assessment on not using a cracked tank. Take a piece of duck tape and try to pull it apart, I bet you can't. Put a nick in the middle and try again, I'll bet the piece rips across the middle starting with the nick you created. Well glass is the same way. Once you put a small crack in it, the structural integrity goes waaaaay down. A small crack will just grow and grow under pressure.

Im not using the cracked glass anymore too risky. Im going to have it recut 3" and have a 210 gallon instead of 225 lol