Aquarium safe paint

[Goatmeal]

What is the rule of thumb when it comes to paint? I know Dean mentioned what he uses before in a video, but I can't find it now. I'm just looking to paint a filter intake. 

I know Krylon Fusion used to be recommended often, but I also understand that formula changed some time ago. I have Rust-oleum 2X on hand, which says it works on plastic. Is this ok, or do I need to shell out for something plastic specific like Tamiya? -Thanks 

[yannachka]

ive used the krylon fusion one with no issues. if there was a formula change it must not have affected it. it may be an issue in saltwater and be fine in fresh. 

[Goatmeal]

I think the change just made it more like other brands on the shelf, but didn't necessarily make it toxic. 

[StephenP2003]

I used krylon fusion in December for my 3d background. 8 months no issues so far. 

[Paul]

I’ve used both Krylon & Rustoleum on my aquariums with no issues.

[Bill Smith]

I've used several kinds of spray paints over the years with no problem; I think most of them are inert for freshwater IF they've been given several days to cure.

One of my favorites is Plastidip for its texture. I've used that many, many times for years with no trouble.