Anyone ever fixed a really large tank (300 gal)

  • We are currently upgrading MFK. thanks! -neo
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frank1rizzo

Feeder Fish
MFK Member
May 23, 2006
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cali
I got this used 300 gal to my house, just to find that the bottom glass cracked. :cry:

Anyone have experiancing fixing somthing like this? Will putting a 1' piece of glass across the cracked part really work? I read this but I'm a little sceptical.

Any help would be great! Im having a really bad day here. :confused:
 
The panes in large tanks are easier to replace than in small ones. Without seeing the construction of the tank, I can not recommend taking the whole tank apart or just replacing the bottom. You will have to look at it to make that determination. All have to do is remove the silicone with a razor blade (have several available) and then cut the silicone adhesive (same stuff as the seal) between the glass. If you take the whole tank apart, use bar clamps or pipe clamps in the re-assembly.

You can also do the add-a-piece-of-glass trick. Just make sure to repair the crack on the inside with epoxy (five or 15 minute stuff in the double syringes) and then after 24 hours (for off gassing) cover the epoxy with silicone (to provide a barrier between the water and the epoxy).
 
Which silicone option? 1 or 2? Obviously the blue represents a silicone bead.

silicine.jpg


I am thinking of going with 2. Is there any reason I should not do it this way?

Thanks again for all your help
 
Only depends on if its bare bottom or substrate, round over the edges of the replacement glass so you and fish don't get cut. If you could put a light vacuum on the bottom side when you use the epoxy it will pull the epoxy thru for a better bond.
 
I have fixed a cracked bottom pane of a 55g, since the original glass was still in place and the tank was solid I just cleaned and dried it then put another pane of glass inside the tank, it was cut a shade smaller than the inner dimensions and I used silicone around the edges and a long, wide squiggle the length of the tank as well as over the crack.
 
get some pictures and keep us updated:grinyes:
 
HHHEEELLLLLOOOOO.......You didn't drown putting the glass in did you ? ;)
Need input...
 
I like the glass-on-the-inside idea. I was thinking of putting the glass on the outside only for support and repairing the crack from the inside for maximum strength.
 
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