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Old 12-31-2012, 12:58 AM   #1
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Default Zero Nitrates?

My 40g tank has been running for about six months now. It's dirted, t5ho lights 80 watts roughly 24 inches off the substrate. I dose Seachem Iron, Flourish, and Potassium 2x a week. I also do a 50 percent waterchanges weekly. I have swords, java fern, crypts, Anubias, and dwarf sag. The plants are growing, not super fast but not slow either. One thing I have noticed is they swords in particular just don't look very lush, even the new leaves it grows are dull. They actually are very veiny looking leaves. I tested for nitrates today, which I usually never do, and it came up zero ppm. The tank is lightly stocked with 8 xiphophorus mayae swordtails. I'm thinking I need to dose Nitrogen, would that be correct? Are my plants starving?

Last edited by jhays79; 12-31-2012 at 01:17 AM.. Reason: Added more info
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