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Old 12-01-2011, 11:21 PM   #1
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Can someone shed some light on my problem?

Hey all,

I have an established 75 gallon African tank. For some reason I am reading VERY HIGH nitrate levels. Between 40-80 more towards 80.

I have 16 Africans in the tank, most peacocks and a pleco.

I have one hang on back Magnum 350 filter and a Cascade 1000 Canister filter.

I have not changed my Cascade in perhaps about 2 months. Just changed my Hot Magnum one about 3 Weeks ago. I usually change them when the water stops pumping how it should be.

Am I overstocked? Is my canister just to dirty and I need to replace it?

I have done 4 waterchanges about 20-30 gallons a night and still its not lowering?

What are your thoughts all? Thanks
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Old 12-01-2011, 11:22 PM   #2
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Have you checked your tap water? That could be your source of nitrates. Test it to see what the nitrate comes out as.

Also, have you cleaned your canister filter? If not, they can become nitrate factories real quick, or so I have heard.
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Old 12-01-2011, 11:29 PM   #3
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I have another 90 gallon that i am cycling and I just changed the water on that last night at it is only at 5ppm?

No My canister I have not and Im thinking that is my source of my problem... I just changed my hang on back about 3 weeks ago so I think I should be safe enough to change it now. or at least clean up some of the gunk on the pads and what not.
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Old 12-02-2011, 10:07 PM   #4
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Hey all.

Just cleaned my Canister filter it was a mess! I got it much cleaner and even changed about 25 percent of the water as well. Hopefully that will bring down my nitrates!

Hopefully this helps.
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Old 12-02-2011, 10:26 PM   #5
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Hopefully it should.
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Old 12-03-2011, 12:49 PM   #6
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I'm running into the same problem...I tested my nitrates in my tap and it was around 20ppm! that seemed odd so i tested again and same result! What can i do to reduce them before putting into tank??
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Old 12-05-2011, 02:10 PM   #7
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Canister Cleanout and water change did not help my nitrates they are still up in the 40-80ppm.

I am dumbfounded. My water is crystal clear and the fish seem to be doing fine.

I donno whats going on. I was feeding three times a day I reduced that to two now. Perhaps maybe ill reduce it again to just one time a day?

That will help I would think.

Thanks
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Old 12-05-2011, 03:31 PM   #8
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Yes, I would say you need to reduce feeding - once a day is adaquate for anything except perhaps fry. Try changing out a larger volume of water at a time as well. 50% WC isn't going to hurt anything and should help.
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Old 12-05-2011, 04:04 PM   #9
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Nitrate Levels

Hello Zap...

If this tank hasn't been running long, it could be the water perameters haven't been established, so you need to stay on top of testing the water and changing it out if toxic readings get too high.

Actually, nitrates aren't as toxic to fish and levels in the 70 to 80 ppm range aren't life threatening as long as you're consistantly flushing large amounts of water through the tank. This way, toxins can't build up to harmful levels before the next large water change.

I would check your testing equipment in case it might be expired. In the mean time, increase your water changes until your nitrates are into the "safe zone" and replace any old filter media. The more water you change and the more often you change it, the better.

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Old 12-05-2011, 04:14 PM   #10
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Tanks been running since about last March. It has always been good until lately.

Im thinking the fish are getting bigger producing more waste and it prob dont help that im still feeding them as they were babies! haha they do love Breakfast, Lunch and dinner though.

Looks like im going to start feeding them only Dinner. They devoure all the food i feed them in like a min or two, and are still hungry.

Thanks.
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Old 12-05-2011, 04:26 PM   #11
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What is your normal tank maintenance schedule?
Filter cleaning? ( Also if you actually change the filter pads)
Water changes, frequency and volume?
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Old 12-05-2011, 04:47 PM   #12
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I typically change about 20 gallons out of the 75 once a week. I have two filters running on it. A canister and a HOT HOB. I cleaned and completely changed the HOB about 3 weeks ago.

I "cleaned" left the media in the filter but cleaned them up a little bit last thursday.

Typically I try to alternate the cleaning of the filters. I plan on cleaning completly the canister except the Bio-rings in a bout a week or so so that the HOB can really establish.

But monthly on filters.

I have been feeding alot though as they just seem to always be hungry.
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Old 12-05-2011, 04:54 PM   #13
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Hmm, all seems fine, but 3 times a day is a LOT. Once a day is plenty, and remember one day of fasting doesn't hurt at all. I would do a massive water change, maybe two. To get the nitrates down to <20. And see what it takes to keep it there. Unless your tank is overstocked you should be able to keep it at ~20 nitrates.
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Old 12-05-2011, 05:02 PM   #14
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Well I have about 16 Africians in the tank. 1 Pleco who is about 6 inches long.

Im thinking I just need to feed only once a day for now and see if that helps.

Im going to do a couple 50 percent waterchanges over the next two days and only feed once a day and see if that helps.
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Old 12-05-2011, 05:03 PM   #15
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What kind if pleco is this?
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Old 12-05-2011, 05:08 PM   #16
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Common. Im thinking about moving him to a larger home. He just cruises around and doesnt mind anything I just think he is going to become to big for the setup that I have.
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Old 12-05-2011, 05:27 PM   #17
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Common plecos need a 125+ and are extremely dirty, I'd say this is part of your problem.
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Old 12-05-2011, 05:30 PM   #18
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ya I think im gonna rehome him. In order to do that I have to pull all my rocks out. Looks like its a good time for a full cleaning.

I think he is part of the poop/waste/nitrate problem.
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Old 12-05-2011, 05:45 PM   #19
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Quote:
Originally Posted by Zapero
ya I think im gonna rehome him. In order to do that I have to pull all my rocks out. Looks like its a good time for a full cleaning.

I think he is part of the poop/waste/nitrate problem.
I would bet that once you rehome him your problems should be magically fixed.
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Old 12-05-2011, 06:08 PM   #20
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How can you get the nitrate down in your tank though if your tap has 20ppm!?! My tap has been great up til about 2 weeks ago and now it's crap...
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