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Author Topic: Can't get my nitrates down  (Read 483 times)

Offline Gardengirl1

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Can't get my nitrates down
« on: October 24, 2018, 08:59:19 PM »
Hi all,

I have a 75 gallon tank with a Fluval  406. We recently moved the tank and temporarily put the fish in a 5 gal tank. Drained most of the water in the big tank, but kept all the water in the filter.
Put the fish back in the tank after filling with water and running the filter for a couple days. Then changed out all the filter medium except the ceramics. Checked my water the next day and nitrates were really high. Did another water change and tested again and my nitrates were still 40ppm.
Swapped out 1 carbon packet for a purigen packet. Tested it again and my nitrates are still 40 ppm.
I have a 6" Albino
2 clown loaches about 3"
2 peacocks about 3"
2 peacocks about 2"

Do I do another water change? I know the nitrates are too high but I don't want to stress them by changing too much of the beneficial bacteria. Seeing as I'm just now really getting serious about my fish, I would really appreciate any advice.

Offline Mike718

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Re: Can't get my nitrates down
« Reply #1 on: November 03, 2018, 03:04:55 AM »
I could be from cleaning the filter to much on top of many other things like trapped food and waste etc. I would feed light and do a few 35-50% water changes. How big of waterchanges have you been doing? Do you have any nitrates in your water source? Sorry for the late reply
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Offline gdjewett

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Re: Can't get my nitrates down
« Reply #2 on: November 03, 2018, 10:06:46 PM »
40 ppm is not a big deal. If your using the API test kit, I don't trust them. The Sea Chem kit reads about half. I quit testing my water about 4 years ago, I change 20 to 25 percent of my water about every 4 days.