Cleaning with citric acid

[Neo Jeo]

Hello Reefers!

What would the best way to clean power heads to get coraline off? I bought this stuff.

Cup per gallon? How long do I soak? Can I soak everything in it or just plastic parts?

Thanks!

 

[Blue Spot Octopus]

Following along.

 

[Neo Jeo]

I found on BRS 3/4cup per gallon. I did 1 gallon. Needs to soak for an hour still had to scrub a little but it was super thick coraline.

Worked!

Before and after pics.