Fish tank crack repair

[fish48]

I noticed one of my tanks started slowly leaking after removing fish and substrate I found a very large crack on the base of fish tank , I didn't have a piece of glass to cover the whole inside of base so I made do with a piece of glass that is large enough cover the crack, this two foot tank is more than 30 years old so after placing glass over crack I decided to reseal over corners and removed loose brace and reglued , it's the first time that I have used HA6 silicone recommended for the use in aquariums in 24 hours this old tank will be back up and running

 

[GaryE]

That's a tough crack to seal. In a 30 year old tank, it may not work. I wouldn't fill it in an apartment tor over expensive flooring.

I've fixed a lot of cracks, with about a 50% success rate after 3 months. Back and side glass cracks aren't really an issue in smaller tanks (20 gallon and under) but I haven't won a lot of battles with bottom glass.

 

[Archerfish]

I would also look to see what caused the tank to crack. Very likely it will recur unless that issue is resolved.

 

[Back in the fold]

I’ve seen that done before . It will work .

 

[Fishmanic]

Or you could try applying “crack spackle.”

​

I hope fellow mods dont ban me

 

[fish48]

Or you could try applying “crack spackle.”
View attachment 357026

​

I hope fellow mods dont ban me

very funny lol

 

[fish48]

the fish tank is up and running cause of crack tank sitting on a slight uneven surface , i have a number of tanks with cracks and some with cracks on sides I repair them all in the same way i have also taking a number 3 ft tanks apart two shorten them I've never had any problem after repair although some a bit on the tati side, because the tanks in my fish room are put on racking long ways in it's barely noticeable

 

[anewbie]

As a rimless tank it should be on a matt and that should help with any uneveness of surface but there are degrees here. I had one aqueon aquarium that did a similar thing and it was repalced by the store under warranty but of course they didn't cover the $20,000 damage to the wood flooring so as mentioned above you should take that into consideration.


The aquarium look quite small (which means less weight) so it is a bit perplexing but i guess glass also flows a bit over 30 years. Anyway no comment on the fix causing a large leak later... just make sure the floor et all can handle the water... or your insurance is up to date.