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Old 01-18-2011, 04:19 AM   #1
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Can't get Nitrate below 10ppm

I have a 46 gallon tank with about 40 lbs of live rock, eheim canister filter 2234, uv filter and hang on protein skimmer. I have 3 chromis, 1 rock blenny, 10 hermit crabs and five snails.

I would love to start adding coral to my tank but I understand the nitrate should be as low as possible. I can't seem to get my nitrate level below 10 ppm. Everything else is at 0, ph is at 8.2. I have been doing regular 20% water changes about every 2 weeks.

Is my filter not powerful enough for my tank? Its rated for up to 60 gallons.

Does anyone recommend something like this to add to my filter media?
Seachem Matrix Bio-Media

What else can I do?
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Old 01-18-2011, 05:10 AM   #2
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Hmm try increasing ur water changes to once or twice a week.. Nitrate is the end of the nitrogen cycle and the whole point of water change is to remove nitrate. So it seems like u need to do more regular water changes. And adding stuff to ur filter media is fine but better fix the root of the problem first. So try changing water more often and then if it still doesn't change. Try adding stuff to ur filter. Good lick
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Old 01-18-2011, 10:23 AM   #3
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how often are you washing that cannister out? i would be washing it out completely once a week.
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Old 01-18-2011, 10:42 AM   #4
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I agree with Larry as far as your canister. Try washing it out. Also as far as 10 on the nitrates it is not the end of the world. The object is to try to get to 0 but 10 is really not that bad IMO. As for your PWC`s are you using tap water. If so you might be adding the nitrates yourself.
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Old 01-18-2011, 10:44 AM   #5
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Quote:
Originally Posted by mr_X
how often are you washing that cannister out? i would be washing it out completely once a week.
When u say washing It out every week. Does that include ur filter media?
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Old 01-18-2011, 11:05 AM   #6
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10ppm is nothing to worry about IMO
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Old 01-18-2011, 11:08 AM   #7
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Quote:
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When u say washing It out every week. Does that include ur filter media?
sure. that's the most important part. where ever waste is accumulating is the source of nitrates in a cannister.
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Old 01-18-2011, 11:18 AM   #8
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Quote:
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sure. that's the most important part. where ever waste is accumulating is the source of nitrates in a cannister.
I always thou washing ur filter is bad. Coz u lost ur beneficial bacterial.
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Old 01-18-2011, 11:27 AM   #9
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beneficial bacteria resides on surfaces. he's got 40 pounds of live rock in the tank.
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Old 01-18-2011, 12:05 PM   #10
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as Mr X said, it might be from your filter media...i have my sponge filter in my sump when my Nitrates read 40ppm...changed it to new sponge and my nitrates reads around 0-5ppm..cannot tell the exact figure...try to wash or change the filter media...it might be a good start...
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