Do Wet/Dry Filters Remove Nitrates?!

[Valyrian]

I was just reading a koi forum and this guy is telling us about wet/dry filtration that he just discovered and said that he used it on his koi pond to bring his nitrates down with impressive results.
I was under the impression that the wet/dry was supposed to change ammonia and nitrites to nitrates quicker and the only way to remove nitrates was anaerobic bacteria and plants.
So do wet/dry filters remove nitrates?

Here's his diagram.

 

[rallysman]

nope, you thought right.
water changes will remove nitrates, a wet dry will convert the amoinia/nitrite into nitrate. thats its job

 

[koliveira]

no they convert amonia and nitrite to nitrate

 

[DeLgAdO]

no they convert amonia and nitrite to nitrate

same thing

 

[DeLgAdO]

I was just reading a koi forum and this guy is telling us about wet/dry filtration that he just discovered and said that he used it on his koi pond to bring his nitrates down with impressive results.
I was under the impression that the wet/dry was supposed to change ammonia and nitrites to nitrates quicker and the only way to remove nitrates was anaerobic bacteria and plants.
So do wet/dry filters remove nitrates?

Here's his diagram.

theres no way that thing can remove nitrate

i dont care what he says

 

[Valyrian]

lol dang got my hopes up.

 

[DeLgAdO]

lol dang got my hopes up.

lol

lemme get it your hopes up

try putting one of these (the 9x9x4) under the bio-chamber of a wet-dry (the submerged part).

Its a denitrifying block,
to get rid of nitrate biologically you need an anerobic environment to house the bacteria, they convert the nitrate into nitrogen gas.

i wouldnt rely on it completely though

id use it in conjunction with Water changes.

 

[DeLgAdO]

use a good mechanical filter too

if that thing gets clogged with crap

it will also be producing hydrogen sulfide gas which will KILL the fish

 

[Miles]

to get rid of nitrate biologically you need an anerobic environment to house the bacteria, they convert the nitrate into nitrogen gas.

I wonder if somehow those 'Filter Mattings' after long periods of use, will create an 'anerobic' environment inside of them due to lack of O2?

From a hobbyist standpoint, it is really not worth the time or effort to create any sort of device that removes Nitrates. Other than live plants, most of the de-nitrification process are very complicated, can have dangerous results when done improperly, and just not worth it unless being done on a major scale (see Vegas public aquariums..)..

 

[fishnutham]

I wonder if somehow those 'Filter Mattings' after long periods of use, will create an 'anerobic' environment inside of them due to lack of O2?

From a hobbyist standpoint, it is really not worth the time or effort to create any sort of device that removes Nitrates. Other than live plants, most of the de-nitrification process are very complicated, can have dangerous results when done improperly, and just not worth it unless being done on a major scale (see Vegas public aquariums..)..

thats what i was thinking too it is possible he may have a small reduction in nitrates with that design i dont clean my filters for that reason i have lower nitrate readings this way but if i clean them regular i cant change enough water to keep up mind you i us 8x more filtration then is required ..