High Nitrate Fresh Water

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nfored

nfored

Fire Eel
MFK Member
Apr 4, 2008
2,597
14
68
Missouri
I have Nitrate of 40ppm, in my aquarium, I have done two 20% water changes over a 4 day time line with no change. I have 10ppm coming from the tap so the best I could ever hope for is a 10ppm, I use amquel+ to treat the water as I have 0.25ppm ammonia comming from the tap.

I have read about denitrator coils but hear they take many months to kick in, I will get one started, but is there any thing else I can do. LFS wants 70/gal for distilled water, and I am not a fan of anything that will remove ammonia as i fear it will hurt my BB. The only nitrate removers I have seen also remove ammonia.

Any Ideas guys?
 
Plants that feed on nitrates, more water changes, albeit in less quantity perhaps due to the nitrate content of your tap water, a nitrate reducing resin in your filter and clean your filters ( may have a lot of organic matter inside )
 
nfored;1815166; said:
I have Nitrate of 40ppm, in my aquarium, I have done two 20% water changes over a 4 day time line with no change. I have 10ppm coming from the tap so the best I could ever hope for is a 10ppm, I use amquel+ to treat the water as I have 0.25ppm ammonia comming from the tap.

I have read about denitrator coils but hear they take many months to kick in, I will get one started, but is there any thing else I can do. LFS wants 70/gal for distilled water, and I am not a fan of anything that will remove ammonia as i fear it will hurt my BB. The only nitrate removers I have seen also remove ammonia.

Any Ideas guys?
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unless your fish are delicate leave it alone and do regular water changes.most fish dont mind 40 ppm nitrate







.
 
Is it possible you have a buildup of waste in a sponge or media filter that you could rinse out to remove? 40ppm is not bad as stated above, but as in a reef system, you remove the Bio media in wet/dry systems to cut Nitrates down (Berlin System).
 
By doing two 20% water changes with 10ppm nitrate water you will lower your nitrates to 29ppm, assuming no fish load.

ie:
100L tank

1st water change, take out 20L:
40ppm NO3 = 40ppm NO3 X 20% = 8ppm NO3 removed
add back 20L @ 10ppm NO3 = 2ppm NO3 added
net removed = 6ppm NO3
tank now has 34ppm NO3

2nd water change, take out 20L
34ppm NO3 = 34ppm NO3 X 20% = 6.8ppm NO3 removed
add back 20L @ 10ppm NO3 = 2ppm NO3 added
net removed = 4.8ppm NO3
tank now has ~ 29ppm NO3

Add the fish load constantly producing NO3, and this may be why you are not seeing a reduction. What size and how many fish, feeding regime, etc. will dictate how much nitrate is being generated by the system.

And as said above, if you can keep it at 40ppm NO3, thats not so bad...

Burt:)
 
could do a drip system. and have it go through a plant filter first to get ride of those last 10 ppm of nitrate .
 
40ppm i wish mine was that low

40ppm is nothing to stress about leave it alone
 
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