Thanks guys my friend brought up a question and I honestly don't know the answer. I know overdosing the fish with copper is bad but in the case where the fish don't have ich and it was juse a mistake what would happen if I treated them with copper. My fish do have ich I know for a fact but I figured it would have the same outcome as overdosing on copper.
I'm not sure you meant to say overdose or if you meant "treating a hypothetical/unidentified pathogen rather than one that's been positively ID'd", but everyone overlooked the word overdose....so just in case:
Overdosing copper IS BAD. (Overdose = more than the suggested dosage.)
A couple of guides from University of Florida's aquaculture section:
From
FA165/FA165: Use of Copper in Marine Aquaculture and Aquarium ... (which is a really good read, all things considered):
"In general, larger aquaculture facilities and public aquaria [and the more discerning Reef2Reefer -- Ed] prefer to use copper sulfate rather than chelated copper complexes, because strength and activity of chelated copper complexes are more uncertain, and chelated copper compounds are also more difficult to remove."
"Copper will damage a number of organs and systems, including the gills, liver, kidney, immune system, and nervous system (Cardeilhac and Whitaker 1988). Gills appear to be the most affected organ during acute toxicity, and will become blunt and thickened and lose ability to regulate body fluid ion concentrations. Copper also suppresses immune system function, and can affect the lateral line of fish. Prolonged copper exposure also may result in reduced growth (Wong et al. 1999)."
The guide mostly focuses on copper sulfate, but I think I saw you're using a chelated copper....they do discuss this a bit. I haven't seen any indication that chelated is better or safer....maybe the opposite.
There's also a guide for Ich:
FA164/FA164: Cryptocaryon irritans Infections (Marine White Spot ...
I would be wary of trying to predict the lifecycle of Crypto...
"The length of the entire life cycle varies, depending upon a number of factors, including strain of
Cryptocaryon, temperature, salinity, and fish host (Colorni 1985; Diggles and Lester 1996a, b, c; Colorni and Burgess 1997; Yambot et al. 2003). Even for a specific strain and fish host, the life cycle may vary by weeks or months (Colorni and Burgess 1997). An average life cycle appears to be 1 to 2 weeks; however, life cycle durations may range from 6 days to 11 weeks, primarily because of the unpredictability of tomont development (Colorni and Burgess 1997; Dickerson 2006; Yambot 2003).
In addition, some characteristics of the different life cycle stages (e.g., size and time required for development) vary depending upon the strain of
Cryptocaryon irritans, the salinity and temperature of the water, and the species of fish infected (Diggles and Lester 1996 a, b, c)."
"A more recent study demonstrated that two life stages of one strain of
Cryptocaryon (trophonts, i.e., the feeding stage during which the parasite can be found on the fish, and tomonts) survived dormant for 4–5 months at 12°C (53.6°F), and, after the water temperature increased to 27°C (80.6°F), developed and infected fish (Dan et al. 2009)."
I recommend reading as many of U. of Fla's guides as you can.
but yeah what do I know about all the deceases 
we have experts for that like you 
