I use the API testing in the tubes and i always get weird levels what test kits are the best to use?
jus1time;4574779; said:How do you know their weird? Did you match them against something else?
Cookie*420;4574801; said:Most would recommend API water test tubes. Not many like the test strips as they are less accurate. Is is possible your water level is weird?
PostalPenguin;4575126; said:First, are you shaking each bottle vigorously before adding the drops? The nitrate test bottles particularly need to be shaken very well.
Secondly, are you thoroughly rinsing the tubes between each test?