Nitrate - The Planted Tank Forum
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post #1 of 38 (permalink) Old 05-17-2013, 12:45 PM Thread Starter
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Nitrate

Sorry if u have had this post before im just wondering can anyone give me an insight to there thoughts on keeping nitrates low for shrimp? obviously the regular water changes and filter rinsing. Ive been told of Api Aqua Detox pillows used as filter media is extremely good at removing nitrate and it can be recharged? has anyone here tried these and are they a worthy solution?

on my api test kit the test result is slightly orange but i cant really tell between 5-20 and 5 is ok and 20 is too much, so its pretty hard to tell if its ok or not?

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post #2 of 38 (permalink) Old 05-17-2013, 01:04 PM
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Plants can help lower and keep it low. Also WC's as needed. Unless you have nitrates in your tap, you're overfeeding, or you have lots of shrimp in the tank, you really shouldn't be having much issue with nitrates that some plants and weekly WC's can't take care of.

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post #3 of 38 (permalink) Old 05-17-2013, 07:58 PM
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Certain plants are more efficient than others at attacking Nitrate levels. Red Mangrove pods are apparently vacuums for it, as are any high demand plants such as duckweed (which is a love/hate relationship for many)

Also keep in mind that those cute little pillows you are referring to also remove as much Ammo and Nitrite as they can along with the Nitrate. I am not sure I would want to starve the BB to save 10 minutes of a water change, and spend more in the long run.
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post #4 of 38 (permalink) Old 05-18-2013, 03:25 AM
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water change

nothing takes the place of routine water changing

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post #5 of 38 (permalink) Old 05-18-2013, 04:27 AM
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best thing to use is live plants. filter media only last so long and you will have to replace it. once it stops absorbing the nitrates it will dump them back in the tank and kill stuff if you know test all the time.

good plants are floaters, hornwort is my fave, duck weed is good but a pain in the but to get rid of. frog bit is another one i use cause its easy to get rid of. my shrimp seem to like horn wort the best cause of all the tiney leaves.
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post #6 of 38 (permalink) Old 05-18-2013, 01:09 PM
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Size tank, what type of filter(s), how much water change per week/month?

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post #7 of 38 (permalink) Old 05-20-2013, 12:47 PM
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Quote:
Originally Posted by wicca27 View Post
....filter media only last so long and you will have to replace it. once it stops absorbing the nitrates it will dump them back in the tank and kill stuff if you know test all the time.
False. The only reason that any sort of nitrate absorbing media would release anything back into the water is if the material itself starting breaking down (which if thats happening you have other issues besides nitrates) or if another compound that has a higher affinity for the media comes along and bumps the nitrate molecules off. Which once again means you have other water quality issues that need attending to.

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post #8 of 38 (permalink) Old 05-20-2013, 01:01 PM
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Nitrate

^^^^ 100% correct.


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post #9 of 38 (permalink) Old 05-20-2013, 05:20 PM
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my cabomba furcata is a nitrate sponge, too - I struggle to get any nitrate reading at all, despite fertz dosing. if my ammonia & nitrite were't firmly pegged on 0, i'd worry for my lack of nitrate readings.
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post #10 of 38 (permalink) Old 05-20-2013, 05:27 PM
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Anyone know THE best nitrate sucking plants? I have anacharis in my tank but it's not doing too good of a job.
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post #11 of 38 (permalink) Old 05-20-2013, 05:29 PM
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Anything that floats will demolish nitrate. Water sprite, duckweek, Salvinia, red root floaters, frogbit, etc.

The faster the plant grows the better.

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post #12 of 38 (permalink) Old 05-20-2013, 08:07 PM
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carbon will only work so long that is why they make the toss out pads, once they stop working they leach it back in the tank. i use sponge filters in all my tanks. even my hot magnum only has the blue sponge in it. and no i dont get nitrate probs. but all my tanks are planted and some have floaters.
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post #13 of 38 (permalink) Old 05-20-2013, 08:24 PM
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Nitrate

Hello,

Imma quote myself here, this is a topic that is been brought up so so so much:

"Shrimp and no3"

Sorry to disagree with the nitrate thing.

No3 is not really harmful to them, is the nh4 and no2 that came before no3 what is poisonous. So test for nh4(ammonia) and no2(nitrite), because if there is no readings for no3 yet but there is ammonia and nitrite then the water is no good.

No3 is at the end of the cycle. We really need to be careful with the previous nitrogen compounds.

This is why people can keep shrimp with more than 150ppm of no3 from ferts. If that was coming from ammonia and nitrate then it would be toxic, not the no3 but the previous nitro compounds.

Anyhow, my point is: testing for no3 in a non cycled mass of water is not enough as a preventive measure.

Based on:

Shrimp and no3
Shrimp and kno3

Nitrates, how high is too high?
Nitrates, how high is too high???

What is a safe range of nitrates for CRS/CBS: (this thread has more conclusive info)
what is the safe ppm range of nitrates for crs/cbs?

Similar to the posts above:
How much Nitrate is too much for shrimp?


A heavily planted shrimp tank is possible!
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post #14 of 38 (permalink) Old 05-20-2013, 08:25 PM
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Quote:
Originally Posted by wicca27 View Post
carbon will only work so long that is why they make the toss out pads, once they stop working they leach it back in the tank. i use sponge filters in all my tanks. even my hot magnum only has the blue sponge in it. and no i dont get nitrate probs. but all my tanks are planted and some have floaters.
You're correct that carbon will only absorb so much. They make toss out pads and tell you to change them so frequently to make more money mostly But nothing leeches out of the carbon when it is exhausted, that is a myth. All activated carbon does is bind on the atomic level to certain compounds that have an opposite charge and high affinity for the carbon surface. These bonds don't just spontanously break because all of the free area on the carbon is saturated with molecules.

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post #15 of 38 (permalink) Old 05-21-2013, 12:24 AM
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Nitrate

Correct, once carbon in no longer active it becomes a biological filter, but it will never leech back into the water column. it's a great myth that I am sure was created by the Carbon filter manufacturers to scare you into changing your carbon filter


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