Cleaning Plumbing

[fishman]

How do you guys clean the inside of your PVC plumbing running from the return overflow boxes to the sump? I want to make sure I have a good clean flow and no algea buildup.
Thanks

 

[Gatorfreak]

I don't. In theory, there shouldn't be algae where the sun don't shine.

 

[Brenden]

I hope there is no algae where thee sun don't shine.