@Krawl how old is your tank? You really shouldnt be getting any reading of ammonia if your tank has been cycled?
In a reef tank you want to check your Calcium, Alkalinity, Magnesium, Nitrate, Phosphate, Salinity. Those are the main ones you'll want to keep an eye on. Nitrite and ammonia should not be readable.
In a reef tank you want to check your Calcium, Alkalinity, Magnesium, Nitrate, Phosphate, Salinity. Those are the main ones you'll want to keep an eye on. Nitrite and ammonia should not be readable.