I just now noticed the wording on a sticky and would like to know if there is a difference between API's "total copper test kit" vs API's "copper test kit"? The test kit that I just bought says "copper". It doesn't say "total copper". I looked on some websites and can't find "total copper ".
Copper test kits the same or not?
- Thread starter TCFletch
- Start date
- Tagged users None
API is a "total copper test kit" which means it can read both low and high range copper. However, practically speaking it does a much better job of measuring chelated (in the high range) than ionic (in the low range). For low range copper (ex. Cupramine) you're better off with a Salifert or Seachem copper test kit because both max out at <1ppm. So, they are more accurate for the low range.
