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Old 05-01-2009, 06:26 PM   #1
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High Nitrate Reading

Having a real tough time getting my nitrates below 35ppm. I've done evrything from 50% waterchanges once a week,to Vodka dosing(which i stopped after a couple of days after it blew my calcium and alkalin. readings off the charts.)I've tried De-nitrate carbon to no changes!My Calcium and Alk. are 400 and 420,my Amonnia is 0.
Any input or ideas will be greatly appreciated.I really got to get it down to at least 15ppm in order to get any Anemones.
Thnx Mike
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Old 05-01-2009, 06:59 PM   #2
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Lets start with the basics,
1) are you using RO/DI water?
2) what is your tank load, ie..fish count, etc
3) how much do you feed your tank?
4) what are your other readings?
5) What size tank do you have?
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Old 05-01-2009, 07:12 PM   #3
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If you are doing 50% water changes every week and still can't get nitrates down, you have way too much load.


Is your tank overcrowded?

are you over-feeding??

could there be something dead and rotting somewhere in the tank?

The only other possibility I can think of is if you are using tap water that alerady is loaded with nitrates or ammonia .
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Old 05-01-2009, 07:19 PM   #4
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whats the size of the tank? whats in it? are you changing with tap water? I'd suggest using distilled water...sumthin dead in there!?! haha...no seriously...how long has this been going on? how long have you had the tank?
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Old 05-01-2009, 09:48 PM   #5
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Quote:
Originally Posted by thincat View Post
Lets start with the basics,
1) are you using RO/DI water?
2) what is your tank load, ie..fish count, etc
3) how much do you feed your tank?
4) what are your other readings?
5) What size tank do you have?
Yes i am using ro/di water,my load is a little heavy i have 9 large fish in my 135gl tank(yell,purp.tang,koran angel,flame angel,yell gob,2 percs,naso tang
I feed once a day and my other readings are
Parameters = Ammonia 0,Calcium 480,ALK 11.2, Salinity1.022,Nitrite and Amonnia 0,With a 75gl Sump/Refugium 3'' sand bed
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Old 05-01-2009, 10:03 PM   #6
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Sorry forgot to mention the tank is 3 years old and no dead fish.... havent lost a fish in 2.5 years.
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Old 05-01-2009, 10:05 PM   #7
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Are you using a skimmer?
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Old 05-01-2009, 10:11 PM   #8
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H&S A150-F2000 external skimmer,rated at 200gl
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Old 05-02-2009, 08:33 AM   #9
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Do some water test on your PWC water to make sure you are not adding it to the tank.
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Old 05-02-2009, 08:36 AM   #10
Thanx but no.....


 
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If your 'my tanks' is correct you might want to add to that CUC. Is this correct?

200gl tank, 135gl sump/refugium,H&S A150-F2000/1 External Protein Skimmer, 3 -175w-20,000k-2-5'vho,4 Seio 1500,Mag 36.,Water Gen.RO/DI300lbs live rock,purple tipped acro,candy cane,kenya tree,zoas,Hippo,Yel. Tang, Sohal Tang,2Perc.Clown,2 Clown Gobies,4 Turbo Snails,2 Blue Leg Crabs
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