Best test kit for cupramine ?

[angelsandtangs]

Using a Hannah test kit I’m using copper power in a 65 qt results are pretty much spot on the last 2 weeks .. my other tank I used cupramine and each result is different ranging from .03 to .2 neither tanks have sand or rock ..

 

[blaxsun]

Salifert?

 

[Tbg299]

Using a Hannah test kit I’m using copper power in a 65 qt results are pretty much spot on the last 2 weeks .. my other tank I used cupramine and each result is different ranging from .03 to .2 neither tanks have sand or rock ..

Hanna copper checker is by far the most accurate copper test kit. Have you checked the expiration date of the copper reagent? Have you added anything to the tank that could have altered water chemistry? Is there any kind of filter media that could be absorbing it?

 

[angelsandtangs]

Hanna copper checker is by far the most accurate copper test kit. Have you checked the expiration date of the copper reagent? Have you added anything to the tank that could have altered water chemistry? Is there any kind of filter media that could be absorbing it?

Use the same pack of regent just bought from Amazon for both tanks … no adds both tanks identical minus type of copper .. cupramine tank has no fish at the moment