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Old 08-28-2009, 01:37 PM   #1
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Nitrates

I want to eventually get corals but my nitrates are at around 15. I know they should be lower for corals. Any ideas to get them down? I have a 14g tank with 15 lbs live rock and two small clowns. Im using stock filtration on a 14g biocube. Tank has been up for about 3 months.
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Old 08-28-2009, 01:57 PM   #2
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How often do you do PWC's and how much? IMO, PWC are very important. It shouldn't be very hard to get the nitrates down with PWC on a regular schedule but it will take some time though.
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Old 08-28-2009, 02:35 PM   #3
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Just do ~2.8g every three or four days and you should be able to reduce your nitrates to a good level.At that rate you should be able to reduce your nitrates by 3ppm's per water change. Try reducing your feeding of your animals also. Like every other day or so. Oh and only one feeding per day.
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Old 08-28-2009, 03:19 PM   #4
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Ok. I will try that. For PWC once levels are down again, how often and how much do you suggest for a regualr schedule?
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Old 08-28-2009, 03:24 PM   #5
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What is stock filtration??? Are there any bioballs, ceramic cylinders, foam sponges etc in there??? Those will cause Nitrates to rise. Make certain to change those out very often. Change them way before the overflow. With that size tank a couple temp/salinity matched water changes and you can have the Nitrates down real fast. 15ppm-Nitrate is actually acceptable for most coral. Just strive to be as close to 0 as possible.
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Old 08-28-2009, 03:27 PM   #6
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Ok. I will try that. For PWC once levels are down again, how often and how much do you suggest for a regualr schedule?
I do a 10%-15% water change every week. But you can do 20% or so every other week. You could even go as long as a month with a 30-40% water change. Its up to you, but with that small of a tank doing smaller weekly changes should be easy enough.
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Old 08-28-2009, 03:32 PM   #7
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Stock filtration is a filter pad then bioball trickle filter. I have heard that this can cause nitrates but i never have heard a clear replacement to it. Ideas?
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Old 08-28-2009, 03:57 PM   #8
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15ppm-Nitrate is actually acceptable for most coral. Just strive to be as close to 0 as possible.
I agree with this statement. Zero is the goal but being slightly off should be OK.
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Old 08-28-2009, 05:10 PM   #9
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Stock filtration is a filter pad then bioball trickle filter. I have heard that this can cause nitrates but i never have heard a clear replacement to it. Ideas?
Yes, remove the bio-balls slowly and replace them with LR rubble. After that remove the sponge.
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Old 08-28-2009, 05:11 PM   #10
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Ok. I will try that. For PWC once levels are down again, how often and how much do you suggest for a regualr schedule?
I do a 20% PWC every two weeks. If your load is heavy then 20% every week.
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