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How to reduce NO3-

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Do a water change (say 30 percent) and check levels. If still high, then do another one the next day or within a 12 hour period just small ones that will not cause too much of an inbalance to your filtration and recheck levels. Double dosing prime on w/c wont hurt in any way

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Only real way to remove nitrates is water changes

25% waterchanges once a week will lower them.

Have a read of this it may help

http://www.qldaf.com/forums/articles-faq-20/nitrogen-cycle-103/

Cav

Edit.

Also you can test the second you finish ur water change,

Test before and after your water changes and you'll be able to see how much nitrates your taking out with ur water changes.

Edited by __CAV__
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I'm going to give Neyund2's method a go, except put it below the tank and let it fill up slowly. Then pump out the water with a small volume pump on a timer.

Aquaponics!! then i call start selling lettuce instead of fish :)

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hey ash, r u the one building a fish room atm? if so I suggest you seal the roof space so you don't loose a lot of heat during winter and also paint the walls with the anti mould stuff in it.

If you have windows in the fish room, sit your planted vegie tank there to get the the sunlight.

cheers

dan

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