eiginh

How do you properly read test kit charts from API freshwater master kit?

Do you place the tube next to the color chart so it'll have a white background? Or place under bright light and check the color from there? Or...?

I noticed when I place it under light the color is lighter but when I place it in front of a white background such as the chart, it's darker. So the readings are different depending on what kind of background... Please help me!

Thank you

Shawnie

I put it against a white piece of paper then have my younger daughter look at it..i swear with age my eyes are older than me! LOL
im sure you will get a ton of different answers cant wait to see what others do..

Aldric

i hold mine against the white of the test card

aquarist48

I do the same...using the white of the test card under a bright light.
Ken