Bettafanatic
Aquarium Advice Addict
What kind of water are you using for water changes? If its tap, I would bet that measures 20 if you tested it.
I use RO/DI water. I did a water change today but it didn't help much. I still have to change the filter pad. I've prepared more saltwater and will do more tomorrow. I don't like using Prime but thanks for the suggestion anyways.