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Nitrates High


Kerstin

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Hi there,

my nitrates went up to 20pp even after the 50% water change I did today. Did not check them before the water change so I have no idea what they were like. What do I do to lower them? Another water change or is it not so bad yet?

Thanks.

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The only way to lower nitrates are through water changes, if they are at 20 then I would do another wc as soon as possible. Some fish might be okay with them so high but others will react to the nitrates. I know you didn't test before your wc but what are they usually like do you know? :)

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Since they are usually lower, than I think you should do another wc and maybe vacuum the gravel really well. You might also want to test your tap water just in case as Flutterbudget suggested. :)

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The only way to lower nitrates are through water changes

I've been told that plenty of times on this forum and while it is easier, simply doing it the way nature does it works too. Just like with the cycle we do with ammonia, nitrite, and nitrate, nitrate can be turned back into nitrogen and returned to the atmosphere by another kind of bacteria. The thing is though, it's a anaerobic bacteria, lives and works in areas without oxygen. I've been using seachem's matrix in my filter and it's kept my nitrates under control for me. Below 10ppm. In high flow areas (over 50gph, like most of our filters) matrix is best, not de-nitrate which is meant for under 50gph.

If changing water or adding plants were the only way to remove nitrates, we'd be up to our eyeballs in it after 410 million years of fish living on this planet. :twocents

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The only way to lower nitrates are through water changes

I've been told that plenty of times on this forum and while it is easier, simply doing it the way nature does it works too. Just like with the cycle we do with ammonia, nitrite, and nitrate, nitrate can be turned back into nitrogen and returned to the atmosphere by another kind of bacteria. The thing is though, it's a anaerobic bacteria, lives and works in areas without oxygen. I've been using seachem's matrix in my filter and it's kept my nitrates under control for me. Below 10ppm. In high flow areas (over 50gph, like most of our filters) matrix is best, not de-nitrate which is meant for under 50gph.

If changing water or adding plants were the only way to remove nitrates, we'd be up to our eyeballs in it after 410 million years of fish living on this planet. :twocents

What is seachem matrix?

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Did a 50% water change and now I'm somewhere between 5 and 10 I think. The problem with my colorchart is that 10 and 20 look really similar. But I think it's pretty close to 5.

Also tested my tabwater which is 0.

Should I do another 50% tomorrow or leave it a few days. Will it go up again or is it like the ammonia and nitrite levels after cycling where they just even out?

Pete and Paul are way more active again now that the nitrates are down. Not that they were totally lethargic, but they just were not their speedy selves, esp. Pete.

Thanks for your help. :)

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It's a highly porous biomedia supposedly better than bioballs but i've never used them. You can find it on seachem's website. Since I started using it, I've never seen my nitrates get over 20ppm and that's with an over stocked tank with lots of food. My filter does 340 gph but the results will vary from tank to tank. It could also be that the bacteria is living in the crushed coral I have in my filter since the bags are really full and the last thing the water goes through before heading back in. I'm still testing to see what's up. I don't have any live plants yet, that's for sure. They're too hungry all the time xD

A lot of companies are trying to figure out how to remove nitrates other than changing water so they can get the profits instead of the water companies. There's plenty of products claiming to remove it now but some do, some don't. This biomedia seems to give the bacteria the home it needs and I personally would rather follow nature than put another chemical in with them.

Another way to get rid of nitrates is amquel+ but since it destorys ammonia and nitrite too, your bacteria will have no food and die off a bit :( Another reason my tank took forever to cycle :doh11:

Edited by Yuko
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It's a highly porous biomedia supposedly better than bioballs but i've never used them. You can find it on seachem's website. Since I started using it, I've never seen my nitrates get over 20ppm and that's with an over stocked tank with lots of food. My filter does 340 gph but the results will vary from tank to tank. It could also be that the bacteria is living in the crushed coral I have in my filter since the bags are really full and the last thing the water goes through before heading back in. I'm still testing to see what's up. I don't have any live plants yet, that's for sure. They're too hungry all the time xD

A lot of companies are trying to figure out how to remove nitrates other than changing water so they can get the profits instead of the water companies. There's plenty of products claiming to remove it now but some do, some don't. This biomedia seems to give the bacteria the home it needs and I personally would rather follow nature than put another chemical in with them.

Another way to get rid of nitrates is amquel+ but since it destorys ammonia and nitrite too, your bacteria will have no food and die off a bit :( Another reason my tank took forever to cycle :doh11:

I'll look into that. Thanks Yoko

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If the nitrates stay around 5 that is good. :) Just keep checking for a while to see if it goes back up or not. Usually mine will go up to 10 or sometimes 15 when I'm due for a wc. But the rest of the time it is down to around 5 too.

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If the nitrates stay around 5 that is good. :) Just keep checking for a while to see if it goes back up or not. Usually mine will go up to 10 or sometimes 15 when I'm due for a wc. But the rest of the time it is down to around 5 too.

Thanks edith. Will do that.

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