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Old 12-01-2013, 08:33 PM   #1
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Nitrates

So My montipora pieces have started to bleach and i got my water tested and I found out i have really high nitrates. I have a 80 gallon tank with a refugium and a skimmer. I now feed every other day and have done two 10 gallon water changes a week. What are some ways to lower nitrates. I bought some prime to help but I need some permanent ways to lower them.
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Old 12-01-2013, 09:19 PM   #2
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The best way I know is to grow and harvest algae. Several ways to do this, from a algae scrubber, to a simple ball of chaeto and a light in your sump.
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Old 12-01-2013, 09:21 PM   #3
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Calcium would have a part of that too. What is your calcium reading?
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Old 12-01-2013, 09:24 PM   #4
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Quote:
Originally Posted by melosu58 View Post
Calcium would have a part of that too. What is your calcium reading?
Low alkalinity can cause them to die as well. Should check calcium, alkalinity and magnesium if possible. Those water changes should have worked the nitrate levels down. Are you using RO/DI water?
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Old 12-01-2013, 09:29 PM   #5
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I would do a couple large water changes. 20 gallons or so. 10 gallon water changes really isn't going to change your nitrates a lot
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Old 12-03-2013, 01:02 AM   #6
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I did a 25 percent water change to help with nitrates, how long will it take for me to see some results
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Old 12-03-2013, 03:21 AM   #7
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They should be up to 25% lower after that water change unless your makeup water is loaded with nitrates.
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Old 12-03-2013, 02:37 PM   #8
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Will purigen help get rid of some of those nitrates
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Old 12-03-2013, 03:13 PM   #9
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RO/DI water is where I would start.
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Old 12-03-2013, 03:14 PM   #10
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That's what I use as top off
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