general cycling ?(PH READING) - Tropical Fish Keeping - Aquarium fish care and resources
 
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post #1 of 4 Old 07-25-2012, 09:04 PM Thread Starter
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general cycling ?(PH READING)

well my fishless cycle been going on for 10 days.this morning my ammonia was at 2.0ppm..no nitrites yet...dosed back to 4.0ppm..i did all my tests afterwords..ph went higher

ammona..4.0ppm
nitrites....0.0ppm
nitrates...0.0ppm
ph..........7.6ppm(before adding ammonia)
ph..........7.6ppm(after adding)
High ph....7.4ppm(before adding ammonia)
High ph....8.2ppm(after adding)WHAT HAPPENED HERE
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post #2 of 4 Old 07-25-2012, 09:17 PM
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Not sure, but I would stay with one test (the normal is fine if the tap water pH is in the 7's). Different tests (normal vs high) will give you different readings, so keeping things on an even playing field is better.

What sort of ammonia are you adding? If it is not pure, it may have other substances in it. I won't speculate on the pH with ammonia, as I have never done this type of cycling (I use live plants) and I don't know if this is common or not. Those who have used it will be able to say I'm sure.

Byron.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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post #3 of 4 Old 07-25-2012, 09:30 PM Thread Starter
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using ace ammonia janitorial strength formula..
10% ammonia hydroxide
of course i shook the bottle..didnt foam..which i knew it wouldnt
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post #4 of 4 Old 07-25-2012, 11:10 PM
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my rough biochemical understanding would predict a slight rise in pH. Any experts please correct me, but adding ammonia (NH3) is a akaline (basic, not acidic) compound meaning it will grab a free floating hydrogen (H). So as you add ammonia it will become ammonium (NH4). A pH test will measure the number of free floating hydrogen in the tank. A low pH means more free floating hydrogen and high pH means less free floating hydrogen. So if ammonia is stealing a chunk of your free floating hydrogen in the tank, then less will be detectable and pH should rise slightly.


-edit- Hang in there, your only 10 days in :) it could take a month for things to cycle through this way. But it will be worth the wait! Give it some more time and keep testing your water. I'd expect to see some nitrite readings within the next 7 days.

Last edited by Aqua Jon; 07-25-2012 at 11:14 PM. Reason: encouragement
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