Painting Pipe

[SplitBumper-70]

I want to plug off the closed loop in my tank and wondering what the best option is to tank white PVC pipe black. I have 3 returns in each overflow I want to plug off and go with Seaswirl returns like I have in the past

 

[Water Dog]

Use Krylon Fusion for plastic. It’s been the paint of choice for anything inside the tank for reefers for many years.

 

[Showcasegars]

Go buy krylon fusion for plastics works great and won't bother fish or water parameters at all!