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Can substrate be responsible for nitrate spike?


kilroy

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Hi,

I changed the substrate in my 4 footer to coral sand 3 days ago. Since then, my nitrates have spiked up to 40mg/l forcing a large water change.

Just wondering if the coral sand is responsible? I know that it took about 20 rinses and hours left soaking in the bucket to get most of the crap out of the sand before I added it a small amount at a time to the tank. I check the nitrates weekly, and they never usually get above 10mg. The tank is by no means overcrowded, so that is my best guess.

Any ideas??

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it's probably the crap that was stirred up out of your old substrate that is the cause of the spike

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Was it "naturally" sourced or pre-packed and dry in a bag? If you collected it yourself from the beach them I agree with YeW's post....and would add that salt water bacteria die in freshwater.

Andrea :)

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