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Old 09-03-2013, 11:47 PM   #1
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Can't lower nitrates

I can't seem to lower my nitrates. They stay at about 40ppm.

I am running a 30g fowlr. 30lbs live rock. 20lbs live sand.

2 small ocellaris clowns, 2 small green chromis. 5 hermit crabs. 5 nerite/margarita snails. 1 peppermint shrimp.

Have chaeto in one of the back chambers. (12 hours on/off)

Running mechanical sponge, carbon and chemi-pure elite.

Top off with ro/di water

20% water change every 11-14 days.

Light on for 8 hours per day.

Feed once daily, only what they can eat.

Can anyone help?
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Old 09-04-2013, 12:04 AM   #2
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What kind of foods and how much exactly? i would try once every other day and see if that helps?
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Old 09-04-2013, 12:24 AM   #3
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I feed a variety. The new life spectrum pellets I think they are called. Then this frozen stuff called Rogers which has like shrimp, octopus and other meats in it then sometimes I put some purple seaweed but remove if it all doesn't get eaten.

I don't feed all this in one day. One day I'll feed pellets the next seaweed etc.
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Old 09-04-2013, 12:37 AM   #4
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I would suggest large pwc like 40% followed by weekly 20%. Rinsed the frozen food and feed only every other day. Once stabilized 10% pwc weekly is recommended.
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Old 09-04-2013, 12:37 AM   #5
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How old is your tank?
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Old 09-04-2013, 08:49 AM   #6
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I do an every other day feeding schedule of PE Mysis frozen shrimp (rinsed, even though it's not packed in anything, just 100% shrimp), and Dainichi Marine FX pellets. Nitrates are almost non-detectable.
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Old 09-04-2013, 08:56 AM   #7
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How often do you clean and replace that mechanical sponge?
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Old 09-04-2013, 09:09 AM   #8
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Quote:
Originally Posted by jeffaquarius View Post
I would suggest large pwc like 40% followed by weekly 20%. Rinsed the frozen food and feed only every other day. Once stabilized 10% pwc weekly is recommended.
+1 I agree with Jeff
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Old 09-04-2013, 10:54 AM   #9
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The tank is 4 months old.

And I clean the sponges out once a week. Do I need to do it more often?

Thanks for the help everyone!
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Old 09-04-2013, 03:45 PM   #10
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Keep cleaning the sponges weekly like you are doing. I support what was said above, but I would cut back feeding to twice a week and only so much. I feed my tank twice a week and only 1 cube if prepackaged frozen food. Even that is prob a tad too much, but works. Do that with large water changes to get the nitrates down. If they are at 40, a 10% water change would only remove around 4, which would be why you aren't seeing it moving at all. Do several 20% water changes over the next few weeks with fewer feeding will drop that to 0 and keep it there.
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