RDL Russetts Developments Ltd Pond & Aquarium Fixer 290ml Adhesive Sealant Glue Black Waterproof Bond

It would have been very helpful if the sealant colour had been mentioned. The sealant is black but the fact that it is also labelled as for Aquarium use would suggest it was clear as use clear is more intuitive in that situation. Black is not optimal with glass and Aquaria are almost always at least partially of glass. We had to return it for clear.

This did the job, but not without a struggle. It is incredibly viscous and I had to use all my strength on the gun to get it out. I'm also not convinced it would stick to a wet surface so I made sure the affected part was dry.

Not easy to use but worked ok once I could get it out.

Does exactly what it says on the tube

nice