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Old 07-25-2010, 04:20 PM   #1
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Nitrates

My nitrates have gone way too high in just a week.
Checked last weekend and they were acceptable and
no ammonia present, I am wondering how I can quickly
get that back down. I just now did a 30% water change in
my 36 gallon SW tank. How soon should I check it after
the change. I use the API test kits and don't know how
accurate they are. The inhabitants show no
signs of stress. Tank is 9 mos old.
Clown
Pygmy Angel
Algae Blenny
Blue Damsel
Sleeper Goby
Coral Banded Shrimp pair
Feather Duster
Choc chip star and a host of snails
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Old 07-25-2010, 04:32 PM   #2
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I`m not saying you are overstocked but you are close to being so. I would suggest frequent PWC`s to help knock down the nitrates.
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Old 07-25-2010, 05:09 PM   #3
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How much, how often

How frequent and how much? Don't want to put
the fish in any more stress than necessary. I have
to get the ph right (too low) in my well water and
send it thru RO unit first. That takes a day or so.
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Old 07-25-2010, 05:20 PM   #4
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you should be doing 10% weekly anyway but i would do 30% weekly until the trates are low.Have you had a death in the tank? how much do you feed.
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Old 07-25-2010, 05:26 PM   #5
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No deaths in the tank (surprised) I feed small amt twice a day:
1/2 cube Mysis or Brine, leave algae sheet 1" in 2 hangers for the blenny
and star. I have a AquaC Remora skimmer I just purchased a couple
of wks ago and it is skimming quite well so far. They all seem so healthy.
Ph is 8.2, salinity is 25, no ammonia, trace of phosphate, temp 77,
#1 power head, Fluval 205 filter... Do I need live rock now? More
janitors? Did the 30% chg today, when should nitrates be checked again?
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Old 07-25-2010, 07:34 PM   #6
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it's not going to stress the inhabitants to do frequent water changes with the correct ph and SG. think of it like a person in a smokey room. do you think sending clean air in at a super fast rate will freak them out? with each water change you are removing toxins and waste.

i never got any readings of nitrate on any API tests i've used. i think they are quite inaccurate. take a sample to a LFS that doesn't use API test kits and double check.
how high are the nitrates anyway?

as for "janitors", no eating, pooping, critter is going to help remove nitrates.
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Old 07-25-2010, 09:44 PM   #7
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I am still a total newbie to sw system and learning from where ever i can so... Might the spike in nitrates be coming from the fluval cannister filter? All that i have read is that in sw systems cannister filters are nitrate makers. I was planning to run my 46 gallon with a magnum 350 and was advised not for this reason. But again, i am just a newbie to all this...
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Old 07-25-2010, 09:56 PM   #8
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Quote:
Originally Posted by FishFreak1961 View Post
How frequent and how much? Don't want to put
the fish in any more stress than necessary.
As mentioned above frequent PWC`s can only help. They replenish trace elements and dilute excessive nutrients. Both are a good thing to your tankmates.
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Old 07-25-2010, 09:57 PM   #9
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I would cut the feeding back to daily at the most. Twice daily seems a bit much and is probably contributing to your high nitrate level. Make sure you rinse the frozen food in ro/di before feeding it to the fish.
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Old 07-25-2010, 10:00 PM   #10
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Nitrates

I'm a newbie too. I also have heard canister filters are nitrate
factories, possibly the foam pieces hold it. I change my fluval filter/
carbon once a month and do a 25% bi-weekly or so. I think that
I feed too much (twice a day) mysis, brine cubes one at night
one in the am, but I split them btw the QT and my main tank.
I have two damsels in time out there. Damsels are pretty darn
hateful. Especially my black velvet! Any suggestions out there
for filter media. I use the bio balls, foam pieces and carbon.
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