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Discussion Starter · #1 ·
Hi there today, a cichlid fish died for me. I did a water test as you can see in the image below and found that the NITRATE level is very high. About five days ago I did about 70 percent water exchange and added PRIME to water. Now it's not clear to me how should I lower the NITRATE level? I would love for you to help me with this before more fish die for me. Do I need to add PRIME? Do I need to do another water replacement? Should I reduce fish feeding in the coming days?

ph 7.6
ammonia 0.5
ppmnitrite 0.0
nitrate 160

Thanks in advance ,
hai.
picture of water test result :
https://ibb.co/k246YtR
picture of my tank :
https://ibb.co/TM64BH1
 

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haidvash said:
Hi there today, a cichlid fish died for me. I did a water test as you can see in the image below and found that the NITRATE level is very high. About five days ago I did about 70 percent water exchange and added PRIME to water. Now it's not clear to me how should I lower the NITRATE level? I would love for you to help me with this before more fish die for me. Do I need to add PRIME? Do I need to do another water replacement? Should I reduce fish feeding in the coming days?

ph 7.6
ammonia 0.5
ppmnitrite 0.0
nitrate 160

Thanks in advance ,
hai.
picture of water test result :
https://ibb.co/k246YtR
picture of my tank :
https://ibb.co/TM64BH1
How many and what kind of fish? What size tank? How often and how much do you feed? I would change 75% of the water again to get the nitrates down to 40 ppm and then 50% changes daily until nitrate is 10 ppm. Do water changes to keep nitrates at or below 20 ppm and make sure you are not over feeding. Considering you have high nitrate with ammonia present I would think your tank is too over crowded, you are feeding way too much, or both.
 

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Had you been doing regular water changes before the one you mentioned? With that high of Nitrates, if you hadn't previously been doing regular (weekly) water changes then it's probable that 70% water change could well have contributed to the fish death. But water changes are one of the steps needed to reduce nitrates and since you already did a large water change I would keep that up until the Nitrate reading is 10 or below. Then weekly 50% or more water changes. Good luck.
 

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Discussion Starter · #5 ·
Here, indeed, the solution proposed with replacement a large part of the water solved the problem.
I'll write what I did if someone in the future came into this cluster as a result of similar things =]

So :
I replaced fifty percent of the water with water from the kitchen. (When I did a water test from the kitchen sink and found that they had 5ppm of nitrate (relatively low level)).
Before I put water straight out of the sink I poured one prime plug directly into the aquarium.

Now the new results as seen in the image (PS the nitrate level in the image did not come out but the color is brown and not red as seen).

After adding new water and one prime cork, I fed the fish a bit as recommended today and switched to feeding in small quantities.

I will do another check in a few days and update if there is any increase in one of the parameters again.

Thanks so much to everyone for the help.
Here's a picture of the new results:
https://ibb.co/8XCcCw5
 
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