Reefkeeping South Africa » Marine Aquariums of South Africa » is Q20 safe to use?

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  is Q20 safe to use?

  Posted: January 16th, 2012, 10:13pm CST by malooda

  Hi
  
  My hinge's on sump cupboard door are rusting and rusting very badly? Is it safe for me to use Q20 on them? Iv got fish and coral in the tank.
  
  
  Thanks