Why does NH4 seem to rise and drop according to photo period - The Planted Tank Forum
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post #1 of 3 (permalink) Old 04-05-2017, 03:37 AM Thread Starter
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Why does NH4 seem to rise and drop according to photo period

So one of the cool things with this Seneye Monitor I have is so many things I can see going on. Now one of them just has me curious. I know what NH4 is(Ammonium). So according to these graphs they seem to rise and fall according to lights being on and off. The first spike is April 2nd. Highest point is at about 3:00pm. Then at lowest point at about 10pm(5 hours after lights off). It follows this same pattern each day. So lights are on at 8am and shut off at 5pm. It really starts to go up as soon as lights are on and then really drops off fast when lights are off. Does this make sense?

Do not mind the sudden down then up spike today. That was me moving the probe temporarily to my 10 gallon then right back to 60.

Wanted to add that the second curve is day after water change which was yesterday. So seems the overall levels were lower. Then today is the one that seems to be close to the same as the one 2 days ago.

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post #2 of 3 (permalink) Old 04-05-2017, 03:44 AM
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Its changing with your Co2 not your light. As your PH drops more ammonia is converted to ammonium. That's why ammonia is less toxic in a lower PH

Dan
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post #3 of 3 (permalink) Old 04-05-2017, 03:46 AM Thread Starter
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Why does NH4 seem to rise and drop according to photo period

Quote:
Originally Posted by Dman911 View Post
Its changing with your Co2 not your light. As your PH drops more ammonia is converted to ammonium. That's why ammonia is less toxic in a lower PH

Dan


Got it and makes sense. Thanks Dan

And actually looking at it that makes complete sense since it went way down when I moved it over to my non co2 10 gallon. Good stuff


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