Removed air from radiators water dark black

[Mojo12345]

Hi I removed air from the radiators in the house and the water from the radiators was mainly black Is this a problem do I need the central heating flushed out any advice would be helpful thank you

 

[Madrab]

Yes, I'd recommend at least a mains flush. Cleaner in, run for a few days, drain and fill .. repeat a few times to flush all the cleaner out.

Might be an idea to fit a filter at this time. Then fill and inhibit

 

[Mojo12345]

Thank you what is a good type of filter to fit?

 

[HERTS P&D]

This one:

https://www.screwfix.com/p/fernox-62248-tf1-omega-filter-slip-socket-connection-22mm/5543v

Andy

 

[Mojo12345]

Thank you