API KH Carbonate Hardness Test Kit - Freshwater & Saltwater
Ratings & Reviews
Great For Testing Tap And Well Water
Works great for testing carbonate hardness which plants and fish need. My water source tends to fluctuate seasonally. I test the town's tapwater water that I use to do water changes and add aquraium salt as needed to get the right perameters... I was bent that the last test kit I ordered came without the color chart. When I phoned and asked them to send me one they said they would, but never did. They need to tape seal the boxes so the charts don't fall out or get stolen.