Fish tank levels

I am currently having some issues with my tank levels. The PH seems a little too low for the type of fish I'm keeping and the nitrates are too high. I'm so confused. How do I fix this?! The death of some of my exotics is what brought the issue to my attention and it seems to have happened over night.

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Originally Posted by inlovewithanimals

I am currently having some issues with my tank levels. The PH seems a little too low for the type of fish I'm keeping and the nitrates are too high. I'm so confused. How do I fix this?! The death of some of my exotics is what brought the issue to my attention and it seems to have happened over night.

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Do an at least 30% water change right away. You may need to do water changes more frequently, and cut back on the amount of food you are giving them. How often have you been doing water changes?

What kind of fish do you have? How big is the tank? Do you have a filter? How often do you do water changes?