Nitrate Issue. Where the heck is it coming from? - The Planted Tank Forum
 
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post #1 of 9 (permalink) Old 06-21-2008, 08:10 PM Thread Starter
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Nitrate Issue. Where the heck is it coming from?

I recently cycled a planted tank. Shows 0 for nitrite and ammonia. I also packed it with quite a few stemmed plants including a bunch of water sprite.

However, I'm having nitrate problems. That's my biggest issue. I did a 70% total water change yesturday and it went from 20 ppm to 10 ppm. But this is similiar to my shrimp tank. No matter how many water changes I do, it doesn't seem to lower the nitrate readings much or the nitrate readings keep saying 10 ppm.

I need it to get to 5-10 ppm for my crays. I do have one crayfish tank that is at 0 nitrates and my test kit shows that.

I don't know where the nitrate is coming from in my newly cycled tank and from my shrimp tank.

I completely changed the substrate in my shrimp tank and changed water constantly every few days and still 10 ppm. Where the heck is it coming from?

Aren't the plants suppose to suck up nitrates? I don't get why my crayfish tank has 0 nitrates and my shrimp tank has 10 even though they both have similiar plant mass in both....

I don't know where the nitrates coming from and its rather frustrating. Am I suppose to do a lot more water changes just to get rid of the nitrates?
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post #2 of 9 (permalink) Old 06-21-2008, 08:38 PM Thread Starter
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By the way, tap water shows 0 nitrates and I also cleaned filter media
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post #3 of 9 (permalink) Old 06-22-2008, 01:01 AM
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That sounds really odd. I believe type of plant does matter (stem or no stem) not just plant mass so that could be part of it. Other than that I am not sure. Hopefully someone else can chime in.
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post #4 of 9 (permalink) Old 06-22-2008, 02:49 AM
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what substrate?
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post #5 of 9 (permalink) Old 06-22-2008, 03:11 AM Thread Starter
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Flourite

But I'm using the same bag of flourite with the other crayfish tank that has 0 nitrates.

Odd? Very!

Annoying? Hell yeah!
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post #6 of 9 (permalink) Old 06-22-2008, 04:04 PM Thread Starter
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You think it might be plants dying in the tank that might cause all the nitrate problems?
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post #7 of 9 (permalink) Old 06-22-2008, 08:25 PM
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Probably your water source. Have to tested your test kit? Id be willing to bet its a cheap one. Get yourself a lamotte if you want a good NO3 test kit


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post #8 of 9 (permalink) Old 06-23-2008, 07:14 AM
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I agree you need to test your tap water.

How long has it been since you vacuumed your substrate? Any mulm buildup anywhere in the system, especially in your filters?

Also, you could make calibration solutions if a Lamotte kit is too expensive.





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post #9 of 9 (permalink) Old 06-23-2008, 07:41 PM Thread Starter
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Quote:
Originally Posted by lauraleellbp View Post
I agree you need to test your tap water.

How long has it been since you vacuumed your substrate? Any mulm buildup anywhere in the system, especially in your filters?

Also, you could make calibration solutions if a Lamotte kit is too expensive.
I don't have access to a gram scale to make calibration solutions (if any of you can ship me some, shipment on me, I'll buy some from you).

I did test my tap water and it seems to be good. Shows 0 nitrates I think i posted it up on #2 post.

I saw some of the calibration procedures and it sounds complicating and time consuming. I'm all for simplicity.
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