What's better? Copper or Formalin?

sen5241b

Reef enthusiast
What's better? Copper or Formalin? Also, these two are the only 100% treatments for ich, right? I've heard that hypo-salinity, although very good, doesn't always work, true?
 
I'm thinking copper is safer for the fish than formalin. Formalin is based on formaldehyde, true? Also, I'll need a copper treatment and a copper test to ensure that copper levels are just right. Is that it?
 
Back
Top