Non toxic Paint for rockwork in a Marine tank

[robrobrob]

Hi. Hoping someone can help.

What is the best Non toxic Paint for painting concrete rockwork in a Marine tank. I am working on a project in Asia. Currently Nippon Weatherbond Acrylic paint has been proposed, but I am concerned this will fade and even flake off in time.

We will be installing hand Carved rock work in the tanks, fabricated in concrete plaster. This will then be hand painted.

Not sure if Water based Polyurethane (PU) paint would be appropriate. Any advice, insights or general help would be much appreciated.

 

[TheCanuck]

I use krylon fusion flat black in my marine tank for my overflows and spray bar on pvc. People use this for years, it will chip if you hit it or scratch it but it will not lift from the water only physical.

 

[Knowdafish]

Well cured enamel or epoxy paint

 

[JohnMoore4u]

There are different type of non toxic paint available.... I think choosing the best one matter the most!

I read on one encyclopedia site about non toxic paint . Very informational one, by that only I came to know about appropriate usage of non toxic paint!