Lonewolfblue
Aquarium Advice Addict
How do you read your liquid test kit? Do you put the tube up against the white card or hold it just a little in front of it? I have been holding mine a little in front because when up against the card, it's dark on one side and brighter on the other side. And now that I've been getting algae in my planted tank and can't seem to get rid of it, I'm wondering if holding it away from the card is giving me lower readings than what they are, thus causing me to dose more than what I should. After looking at my nitrate test, having it away from the card just a bit, it reads around 20ppm, but against the card, the brighter half is more like the 50ppm or more. Any thoughts on this?