Quote:
Originally Posted by jordan2213
I am setting up some new tanks in my Aquatic Science classroom. Due to budget restrictions I had to use backpack filters instead of sumps this year. I have gone through almost 2 months of cycling and then added tester fish which have seemed to be doing ok minus a few fatalities. My problem is that I can't keep my nitrate levels down. I doing water changes consistently and feed less but my nitrate levels are 40 ppm on a normal basis. Does anyone have any suggestions on how to fix this?
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Do you have a thick sand bed and enough live rock in the tank?
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