Pro Shrimp's comment: Liquid Test Kits are more accurate than the common test strips and enable you to do more tests per package.
We stock refills as well!
Recommended level for oodinium treatment: 0,3 mg/l Cu
Accurate test for determining the copper content in freshwater and saltwater tanks. Range of values:< 0,1; 0,1; 0,2; 0,3: 0,45; 0,6; 0,8; 1,2; 1,6 mg/l.
Can also be used to check tap water, which should not contain any copper.
Helpful in administering medications and preparations containing copper, as the copper content should never exceed 0,3 mg/l, whilst insufficient doses will not result in a cure.