Fernox F3 . | Plumbers Arms | Plumbers Forums

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Fernox F3 .

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Discuss Fernox F3 . in the Plumbers Arms area at Plumbers Forums

quality

quality

Plumbers Arms member
Plumber
Gas Engineer
Messages
4,293
Anyone know how long this can be left in a system? I looked on their website but does really say
 
I would stick to the user instructions on the bottle. I've got one here and it says to circulate at normal temperature for minimum 1hr and a maximum of 1 week.
 

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