Fibreglass filler aquariums safe?

[Tearsofstone]

hey there,
so i recently got my hands on a massive breeding setup thats fibreglass and its all been sealed and had fish in it so at the moment its fish safe but there is a leak and im just curious if fibreglass filler is aquaruim safe once cured? its very similar to fibreglass just there is no sheets just a paste that hardens. i got it for some repairs on my ute hardlid and there is heaps left over im just thinking if i can use it for this it would be perfect. thank you in advance

 

[markstrimaran]

Fiber glass filler? The resin will be fine once cured, however. It must be pesificly for permanent underwater use.
Most of the resin fillers will absorb water over time. Fiberglass is also water permiable.
I would recommend glue vits, or an epoxy based.