Nitrates!

[GreenTerrorNoob]

They are reading 90 right now just did water change and vacumed sand 3 days ago ammonia is 0 nitrite 0 and ph has dropped from 7.0 to 6.0. What are some things i can do to get them back to normsl and prevent spikes in future.

 

[HUKIT]

There are all sorts of reasons for high nitrates:

Overstocked on fish.
Overfeeding fish.
Lack of filtration.
Lack of water changes.
Lack of maintenance on filters.
Nitrates in tap water.

I'd start with a few daily 50% water changes witn testing done before and after, then adjust your water change schedule to maintain a level of 20ppm and below. If your overstocked or underfiltered you may need to perform water changes more than once per week. Let your test results determine your schedule.

 

[boadams87]

What size tank is it? How many fish are in it? You need some plants to help absorb those trates.