Fishless Cycle Questions

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Just tested. 0 ammonia, off the chart high nitrites, and nitrates where really high. Going to do a 50% wc. I will only add 1.65 ml of ammonia this time around

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With the water change ... Now you need more ammonia to get to 2ppm I think. Lol. Did you check ammonia levels after the change? It's most important to know how long it takes for 2ppm ammonia to go to 0 ammo and 'trites.


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I knew i was forgetting to do something...I added the ammo bit never tested. Only 1.65 ml this time

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I knew i was forgetting to do something...I added the ammo bit never tested. Only 1.65 ml this time

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So just try it again today ... Your goal is one 24 hour period that started with 2ppm ammonia and ends with 0 nitrites and 0 ammonia.


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Ok, i will test when I get home from school then. Dont think I will have any ammonia, its the nitrites that worry me

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Ok, i will test when I get home from school then. Dont think I will have any ammonia, its the nitrites that worry me

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As I recall, the bacteria that convert nitrite to nitrate can be slower to duplicate. Another article I read suggested each type of bacteria prefers slightly different conditions. So one step can take longer than the other.

When you've been changing water because nitrites are too high, how high are they?

I imagine you are nearly done, regardless.


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As I recall, the bacteria that convert nitrite to nitrate can be slower to duplicate. Another article I read suggested each type of bacteria prefers slightly different conditions. So one step can take longer than the other.

When you've been changing water because nitrites are too high, how high are they?

I imagine you are nearly done, regardless.


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5.0 ppm plus. The nitrates where also really really high.

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5.0 ppm plus. The nitrates where also really really high.

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Check a around but I'm not sure that's enough to need a water change. If you remove too much you don't get your filter established.


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5.0 is the highest the test goes to. How would I know if it is higher than this?

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This is an older test, shows the full range for everything.

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Try the thing where you dilute the tank water with tap, 1 part tank water 9 parts tap or distilled. Then multiply the results by 10.

Just a thought. Dosing really high then changing the water sends you on roller coasters. Dalto is the one I see posting that nitrite can stall a cycle and he seems to have a lot of experience. He may be able to advise on a nitrite max.


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Forgot about the diluted test! I don't have any tap water sitting out so I will fill a gallon jug and use the diluted test tomorrow

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5.0 is the highest the test goes to. How would I know if it is higher than this?
Yes, that is the problem. You can dilute it to get a more accurate reading but you have to be careful to get the ratios correct. It is probably easier just to do the water change.
 
If it changes to 5.0 before the 5 minutes is it safe to assume the levels are above 5.0?

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Check a around but I'm not sure that's enough to need a water change. If you remove too much you don't get your filter established.
That really wouldn't be true unless you removed an immense amount AND stopped dosing ammonia.

What he is seeing is a large nitrite spike caused by his ability to convert ammonia->nitrite being more efficient than his ability to convert nitrite->nitrate which is fairly normal during this process. Even if he cuts his nitrites by 50% they would still be at minimum 2.5ppm. This amount is also likely to grow since he is likely still producing nitrites faster than he can consume them.
 
If it changes to 5.0 before the 5 minutes is it safe to assume the levels are above 5.0?
I don't think so. My experience is the test reaches it's final color before 5minutes. Or at least, it is no longer changing enough that my eyes can tell the difference. I find the nitrite test fairly hard to read once it gets above 2ppm.
 
I don't think so. My experience is the test reaches it's final color before 5minutes. Or at least, it is no longer changing enough that my eyes can tell the difference. I find the nitrite test fairly hard to read once it gets above 2ppm.

Color blind to red and green is no fun. I can see the difference on the sheet, but it gets harder when I have to match the colors...is it just me or is this common?

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I am not color blind but I find that test hard because it is just gets more red as it gets higher. You really just have to look at the hue and not the intensity of the solution and once it turns fuchsia-ish it can be hard to differentiate, at least for me.
 
Ok, waiting for sister ro get outa school and then I will test again. How can I help the nitrite to nitrate part of the equation? Im also going to retest pH because of the DW. If it changes great, if not I wont be to worried.

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