question about nitrates

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tdwright1971

Aquarium Advice Activist
Joined
Jan 26, 2009
Messages
156
Location
West Fork Arkansas
ok, so i was testing my nitrates and and my 180 heavily stocked has 10 pmm running two hang on backs and a sump with bioballs. not too bad for this tank.
My heavily planted 50 gallon with a medium bioload is coming up with 7 pmm, this seems a little high though not sure why.
My 20 gallon brackish sg around 1.010 with 5, 2 inch mollies and a few trumpet snails, no plants very little algea has 0 nitrates... this confuses me. I have yet to do a water change on this aquarium since setting it up...
 
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