Water tested, somethings wrong - The Planted Tank Forum
 
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post #1 of 11 (permalink) Old 08-29-2019, 09:25 PM Thread Starter
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Water tested, somethings wrong

So I tested both my tap water and my aquarium water.. the results speak for themselves.

This test was done after doing a 25% water chabge yesterday..

The first picture is my tap water, second is my aquarium water.
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post #2 of 11 (permalink) Old 08-29-2019, 09:40 PM
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Nitrates that high suggest that you either need to change water more frequently or have more growing plants. The increase in pH could be due to a calcium based rock, shells or substrate in the tank.

Nothing good happens fast in an ecosystem.
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post #3 of 11 (permalink) Old 08-29-2019, 09:42 PM Thread Starter
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This is a picture of the tank in question
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post #4 of 11 (permalink) Old 08-29-2019, 09:57 PM
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Not seeing much in that tank one would expect to cause this. I'd try two things, let some tap sit out 24 hours then pH test that. That will tell you how much is CO2 is off-gassing. Secondly, you could take that rock in back right out, put it in a bucket overnight then test the pH of the water it was in.

Nothing good happens fast in an ecosystem.
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post #5 of 11 (permalink) Old 08-29-2019, 10:00 PM Thread Starter
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Ill just take the rock out. its not really there for any reason. Ill try setting a full bucket of water out and see what happens. thanks for the reply.
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post #6 of 11 (permalink) Old 08-30-2019, 12:25 AM
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With that little bio-load, the nitrates are somewhat surprising ... and they were probably 25% higher before your w/c.

What type of substrate do you have, could you be overfeeding, how often do you do w/c's and how often do you clean the filter?
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post #7 of 11 (permalink) Old 08-30-2019, 12:37 AM Thread Starter
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It's a dirted tank with half an inch of dirt, capped with 2-3 mm gravel. I do weekly water changes but only recently upped to 25% changed. I havent cleaned the filter yet, but now that you mentioned it, I will do that asap.
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post #8 of 11 (permalink) Old 08-30-2019, 12:27 PM
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How long has the dirt been in? That can leach a lot of nitrates.
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post #9 of 11 (permalink) Old 08-30-2019, 01:09 PM Thread Starter
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Ever since I set the tank up, roughly 5 months
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post #10 of 11 (permalink) Old 08-30-2019, 01:28 PM
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Have you always had such high nitrates? Is this the first time you've done this comparison?

I would think by now any initial period of leaching from the soil should be finished, though...
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post #11 of 11 (permalink) Old 08-30-2019, 01:43 PM Thread Starter
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Ever since I started testing my water, which wasn't too long ago. But I wasn't doing very large water chabges either, so the nitrqtes could have just been building up in the water column.
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