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Old 10-19-2004, 06:23 PM   #1
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nitrate levels

My nitrate level is pretty high (about 35 ppm). Is a mass water change the only way to decrease this?
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Old 10-19-2004, 06:36 PM   #2
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There is something called a denitrator but it is pretty expensive. You could try adding sand. But the sure fire way is replacing water. Maybe 1% every day.
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Old 10-19-2004, 06:39 PM   #3
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at that rate how long would it take for to get to reasonable levels?
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Old 10-19-2004, 06:54 PM   #4
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Plants will help too.
But I think seafan must have meant something more like 10 % a day.
I bought a product called Purigem and I think it has brought my nitrate levels down to almost zero.
I didn't think it would work, but can't think how else to explain it. Jeff
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Old 10-19-2004, 07:05 PM   #5
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Your best options are:
Many 15-20% water changes and less feeding
1.5 to 2lb LR per gallon
Refugium with macroalgae and/or DSB
DSB in main display
Combining any of these options will give you even better results. Good Luck.
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Old 10-19-2004, 08:40 PM   #6
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I would try and figure out why it is that high, size of tank, fish how much lr, CC or sand bed?... fuge? Adding chems is only a temporary solution. I would go with just water changes till you can get the problem solved
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Old 10-19-2004, 09:46 PM   #7
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What is your source water for top-offs and changes? If you are not already using RO/DI water then that would be a good start. Tap water tends to bring nitrates up. What type of filtration do you have? More LR and LS will help, as long as it is cured. Try 10% water changes every other day for a few days to see if that helps. What is your feeding schedule, tank size and live stock list?
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Old 10-19-2004, 11:04 PM   #8
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20 gallon
rena canister filter
20 lbs live rock
1.5 inch cc bed
1 chromis
1 peppermint shrimp
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Old 10-19-2004, 11:05 PM   #9
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the tank is 4.5 hours away. My dad is taking care of it and i'm just looking for a temporary fix. I can't get home to do any major water changes until thanksgiving break. Does anyone else have any experience with Purigem?
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Old 10-20-2004, 07:58 AM   #10
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I'd suggest 3 things,
1. water change
2. clean your canister
3. clean(vacuum) your CC.

2 and 3 need to be done pretty often as they'll both produce a lot of nitrate. FWIW 35 isn't sky high, but it could be better.
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