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Old 02-14-2012, 08:29 PM   #1
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Nitrates

Hello all. I've had my 75 gallon tank running for about 7 months now. All my levels are great except for my nitrates, I can't get below 40-60. I do 15% water changes every week, I do not over feed and my tank is not overstocked. I have a 20 gallon sump running (with a skimmer and uv sterilizer) along with a fluval 305 canister filter. The sump has only been up about 2 weeks, I don't know if I'm being impatient or if I need to take other measures. Like a huge water change. Any advice will be appreciated, I really need some direction. Thanks in advance.
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Old 02-14-2012, 08:39 PM   #2
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Have you cleaned your canister? Maybe you need to do a large water change?
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Old 02-14-2012, 09:05 PM   #3
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I just cleaned the canister , how big of a water change do you think I should do?
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Old 02-14-2012, 09:08 PM   #4
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When I had high nitrates I did a pwc of 25% every day over a period of a week or so. My levels were off the charts. I took a water sample and diluted it with tap water to get an idea of how many to do to get good levels.
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Old 02-14-2012, 09:14 PM   #5
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Ok, I was thinking of doing like a 35-40% pwc. Is that to much or do you think it will do the trick. I was also thinking of taking a lot of live rock out and vacuuming all of the sand thouroghly.
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Old 02-14-2012, 09:14 PM   #6
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my 2 cents... just keep doing your reg water changes... maybe start doing 25% every week till levels are good... Unless your doing FOWLR or Reef you should be ok... granted the levels are on the higher end but they are still doable. other wise 25% over the next few weeks.

also, do you like your 305 canister?
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Old 02-14-2012, 09:17 PM   #7
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Quote:
Originally Posted by Viper23 View Post
Ok, I was thinking of doing like a 35-40% pwc. Is that to much or do you think it will do the trick. I was also thinking of taking a lot of live rock out and vacuuming all of the sand thouroghly.

Nah, i do weekly 40 - 50% PWC on my nano... i also don't have a filter i use on a daily bases either. Just a MP10, 150w HQI, and heater. You will be ok. Got any pictures?
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Old 02-14-2012, 09:52 PM   #8
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I don't care for the fluval line. I have had some problems with it. I don't have any pics yet
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Old 02-14-2012, 09:56 PM   #9
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Use/Build an Algae scrubber
Very easy to make and maintain,,you'll have 0 trates in no time
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Old 02-14-2012, 09:58 PM   #10
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Quote:
Originally Posted by Viper23 View Post
Hello all. I've had my 75 gallon tank running for about 7 months now. All my levels are great except for my nitrates, I can't get below 40-60. I do 15% water changes every week, I do not over feed and my tank is not overstocked. I have a 20 gallon sump running (with a skimmer and uv sterilizer) along with a fluval 305 canister filter. The sump has only been up about 2 weeks, I don't know if I'm being impatient or if I need to take other measures. Like a huge water change. Any advice will be appreciated, I really need some direction. Thanks in advance.
How old are your test kits? I would get a second opinion at your LFS and see if they match. I've known a few folks who thought they had ridiculously high nitrates only to have the error with dysfunctional test kits.
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