Nitrate build up

[giroux68]

Is the only way to keep nitrates low by changing water?

Do plants or bactreria use it for anything?

My levels have been about 20ppm with 25% - 40% daily water changes.

Is that level high enough to cause problems?

[brewmaster15]

Aside from water changes... the only things that consume nitrates are plants, and some anaerobic bacteria. Do you have any plants in your tank? hanging plants like pothos and Philodendrons are great for soaking up nitrates. Just cut them, and root them in the tank.

-al

[giroux68]

the tank is planted. I tried the pothos ivy. It had some whitish stuff comming out of the cut end.

[brewmaster15]

If planted... try some plants that thrive on the nitrates... water sprite comes to mind as well as the valls.

If the pothos didn't work.. try the philodendrons. You could also buy the potted pothos, and rinse the dirt off the roots. place these in the water.

-al

[Carol_Roberts]

Does your tap water have nitrates? If not, I would do more water changes or reduce the amount of of fish in the tank. 20 ppm is too high.

[95jeepxj]

I have been doing some research on a freshwater plenum system. Similar to the systems used by reef keepers for years to reduce nitrates.

jake

[Bruce]

What size tank do you have and what is your current bio-load?

[giroux68]

I have a 55g with 7 discus - 1.5 in to 3 inches, one corry catfish. Magnum 350 with 2 bio wheels.

[Carol_Roberts]

That shouldn't be overstocked even if you do have lots of gravel and plants. Is there nitrates in your tap water?

[Luca]

Heya, just a question about nitrate,

I've only found "nitrite" tests in the LFS's here, i assume there's a way to convert easily from nitrite to nitrate??

Just want to make sure my nitrate is under control before introducing discus

thanks,
Luca.

[Carol_Roberts]

NitrAte is the end product of the nitrification cycle.

Fish excrete ammonia which "good" bacteria convert to nitrIte. Other "good" bacteria convert the nitrIte into nitrAte.

When a new filter is put on a newly set-up tank the water should measure zero for all three. After fish are added the ammonia levels start to rise, but nitrIte and nitrAte are sill zero.

The "good bacteria" will start to colonize the filter media and begin converting ammonia to nitrIte. Soon ammonia levels will drop to zero and you will read high nitrIte levels.

After another period of time the nitrIte converting bateria will colonize the filter media. When the nitrIte levels begin to fall the end product will be nitrAte.

A fully mature filter sized correctly for the fish load should be able to keep ammonia and nitrIte levels at zero in the tank. NitrAte levels will steadily rise until a water change is performed. Plants in the tank will remove small amounts of nitrAte. A 50% water change will cut tank nitrate levels in half.

. . . . . unless you have nitrAtes in your tap water

[95jeepxj]

May want to try some hygro. polysperma. Fast growing plant that absorbs nutrients.

jake

[giroux68]

carrol - I thought that the higher levels might be comming for the tap, but they are not. I have added the amount of the water changes. That has helped.

[barron]

I use, Purigen, in my community tank. For the Discus tank water changes do the trick. Water from tap nitrates zero.

It is a synthetic polymer that removes proteins, nitrite and nitrate, ammonia and a broad spectrum of organics.

Seachem puts it out.

It is rechargeable, 250 ml treats 250 gal of warwar.
$9.29
http://www.drsfostersmith.com/produc...mp;pCatId=4190

I like it. Nit were 5 after water change and in 2 weeks were back to 15-20 parts now less then 10 after 3 weeks. I change 50% every 3 weeks.

hth

[giroux68]

where do you put the stuff? In a canister filter? How do you recharge it? Sounds interesting - are there any downsides?