The difference in copper types on wrasses

[mfinn]

I started a copper treatment on my 4 leopard wrasses 4 days ago.
I am using Coppersafe which is chelated copper sulfate.
Someone suggested I use that specific brand. I can't remember who. I've gone through my pm's and looked at threads where I've posted about these wrasses and the need for a copper treatment, but I can't seem to find it.
I wanted to ask why chelated copper instead of ionic copper ( curpermine)?
After reading the literature on cupermine ( now) it seems like a much better choice.
It says it's:

"It is superior to copper sulfate, chloride & citrate: it is non-acidic, less toxic to fish, remains in solution, and does not contaminate the filter bed. It is superior to chelates: it is fully charged (ionic), active at low concentrations, and is removable with carbon. There is more than a four-fold concentration gap between the minimal therapeutic dose (0.2 mg/L) and the toxic dose (0.8 mg/L). Cupramine is easily removable with chemical filtration."


Another thing I noticed with testing, the test kits for ionic copper seem to be more acurate.
Easier to dial in a closer test result.
This API test kit I have to use with the Coppersafe sucks.

 

[mfinn]

I've heard from a couple people about ionic copper. One person said he lost his fish fast and the other said it worked fine.

Then I heard from another that chelated copper is best for leopard wrasses if the need arises.

 

[ThRoewer]

What are you treating against?
Copper is hardly ever indicated as the first choice of treatment.
The only reason I could think of would be treating against velvet when the affected fish are either wrasses or Syngnathidae and Chloroquine can therefore not be used.

If it's against ich, then there are better methods: Tank transfers or hyposalinity or best both together.

 

[mfinn]

What are you treating against?
Copper is hardly ever indicated as the first choice of treatment.
The only reason I could think of would be treating against velvet when the affected fish are either wrasses or Syngnathidae and Chloroquine can therefore not be used.

If it's against ich, then there are better methods: Tank transfers or hyposalinity or best both together.

There is no room for a second quarantine tank so TTM is not an option and a couple people I know recommended chelated copper over hyposalinity for meleagris wrasses.

Copper wasn't the first med I used. The wrasses went through 2 rounds of Prazipro ( 15-16 days). Near the end of the second round one of the wrasses started scratching occasionally.
I asked a few questions from people I know who are experienced with wrasses and different medications and followed their advice.

My questions were more of why chelated copper over ionic copper?
Plus my comment about the test kits.
I can only find one test kit that has a high enough range for chelated copper.
I did see a recommendation for a Hach copper test kit, but at $76 is a little out of my budget range for something I may or may not ever use again.