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Old 02-12-2007, 10:10 AM   #1
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kent nitrate sponge?

has anyone used this before with good results? i just purchased a small container in hopes of taking my nitrates from 20 to 0-5. i do PWC weekly, but i just cant seem to get them below 15-20. any thoughts?
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Old 02-12-2007, 02:48 PM   #2
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IMO if you have them between 15-20 then that is not that bad. Usually a refugium is the next step to getting them closer to 0. Also denitrators can help. You can use it if you want but if you can get it to 10-15 to even 20 then I think you are OK. Check your source water to see if you are adding any nitrates. Good Luck.
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Old 02-12-2007, 02:53 PM   #3
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checked that. no NO4 in my RO/DI water. only thing i can think of is maybe the sponge in the canister, but i try and rinse it once a month. you think i should just take it out? is there any beneficial bacteria that would be in the sponge? i put the nitrate media in a bag in the skimmer chamber. we'll see how it works.
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Old 02-12-2007, 03:56 PM   #4
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I`ve seen people wash them out real good and I`ve seen people get rid of them saying they are nitrate factories. I hope it works out but as I said I dont think you are far off.
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Old 02-12-2007, 05:48 PM   #5
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I tossed my sponges. I had 4 of them in my fluvial. If you only have one, try rinsing it out in FW and see if that helps. As stated above, 15-20 is not too bad.
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Old 02-12-2007, 06:30 PM   #6
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yeah, there are 4 in mine too. i have the flluval 404.
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Old 02-12-2007, 06:33 PM   #7
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Quote:
Originally Posted by mwrmma
yeah, there are 4 in mine too. i have the flluval 404.
In that case, I removed two at a time, waited a week and tested. Once I knew the water was ok, I romved the other tow.
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Old 02-12-2007, 11:51 PM   #8
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Quote:
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...but i try and rinse it once a month.
Hmmmm. Does that mean it often goes longer?

If you're doing weekly water changes, rinse the sponge out in your old saltwater each week. Maybe if you do that for a month or so, you'll see your nitrates go down as long as you keep up your weekly water changes?
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