Why is my nitrat off the scale

[entertainer1983]

Can't work out why my nitrat is so high tank bin running just over a month and nitrat is off the scale tryed a 50% water change and retest and no change what am I doing wrong


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[Gill Blue]

http://freshaquarium.about.com/od/watercare/a/nitrates.htm

 

[anarekist]

check the nitrate levels of the water you are adding.

 

[ElectricBlueSeanBurch]

1 thing you are doing wrong is not giving us enough info.

Tank size, stocking, filtration, wc schedule, other parameters, ect

 

[entertainer1983]

Tank Is 3 by 2 by 2 nearly 300 litters with 9 very small south amaricans all bout an inch to two long . I have got 2 internal filter 300 lh each and an external 600 lh


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[entertainer1983]

Checked the water adding last nite as that was my thort but it was fine


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[entertainer1983]

Ooo and do 20% once a week


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[entertainer1983]

that result after 50% wc


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[Hondacrx2]

Over feed? Change the filter media?


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