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Old 09-20-2017, 01:28 PM   #1
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Help nitrAtes to high

I cycled my tank for 8 weeks, put in fish and now my nitrates are 160. I'm using the API masters kit. I bought fish 3 days ago and half of them are dead. I only had time to change about 4 gallons of water out of my 29 gallon tank before work this morning. I will test when I get home to see where my nitrates are. How much water should I change? When can I replace the fish?
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Old 09-20-2017, 01:32 PM   #2
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It's all math, at 160ppm a 50% change will drop you to 80ppm and so on. I'd try to get them down into the 10-20ppm range and go from there
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Old 09-20-2017, 01:34 PM   #3
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Hello 5...

The water in a smaller tank should be changed out at least once a week and at least 50 percent of the volume. Adding some individual stems of a floating plant like Anacharis will help keep the tank water clean between water changes.

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Old 09-20-2017, 02:12 PM   #4
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Adding some individual stems of a floating plant like Anacharis will help keep the tank water clean between water changes
For those with a black thumb like me, further detail is needed.

Do these stems actually get planted in the gravel, or just let them float on the surface?
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Old 09-20-2017, 02:16 PM   #5
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It's all math, at 160ppm a 50% change will drop you to 80ppm and so on. I'd try to get them down into the 10-20ppm range and go from there


That helps! Thanks! How often can I do water changes?
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Old 09-20-2017, 02:18 PM   #6
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That helps! Thanks! How often can I do water changes?


And how much can I change safely at a time?
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Old 09-20-2017, 02:25 PM   #7
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Assuming you match temp and the ph isn't drastically different I've done 90% changes in the past
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Old 09-20-2017, 05:08 PM   #8
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Hello Up...

There's no planting required. The plants just sit on top of the water, close to the light source. They take in the nutrients from the dissolved fish waste (nitrogen) through pores in the leaves, so they'll keep the tank water cleaner. Large, frequent water changes are a must for any tank.

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