Those things are sealed with tar. If it leaks, before you tear out all the tar, soak it in a tub of hot bath water. Usually the tar will loosen up and reseal itself as it dries.
20 gallon metal-frame show tank - Should I?
- Thread starter patrick.paul
- Start date
That's what I call old-school experience 
I'm wondering if I should just rip it all out and reseal for a reliable, yet retro look?
Best Regards,
Patrick
I'm wondering if I should just rip it all out and reseal for a reliable, yet retro look?
Best Regards,
Patrick
i wouldn't i've done it and it's a pain if your really concerned just run a bead of silicone along the inside seams of the tank. it looks like it's a glass bottom so you should have not problems doing that, might even be that the glass was replaced at some point already. ether way give use pic 
That's what I call old-school experience
I'm wondering if I should just rip it all out and reseal for a reliable, yet retro look?
Best Regards,
Patrick
If it's glass bottom, you can probably rip it out and redo it, but if it's slate bottom, silicone won't stick to it.
I resealed a slate bottomed metaframe tank a month or two ago with silicone and it is still holding water.
the silicone is in you're tank was probably done much after the tank was built originally thay built these tank and sealed them with tar on the out side often times if the tar is in good shape you can just remelt it ether in warm water or with a hair dryer to seal the tank.
