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TwentyfiveCents
06/29/2017, 01:19 AM
3 months into my first tank and I picked up a seneye reef monitor, it shows my nh3 is at 0.001 and my nh4 is at 7.8...i slowed down on all my feeding but I cannot get my nh3 to 0.000 or get my nh4 to go lower than 6.0....i know nh4 is not a huge concern but is it possible to get it down to 0.001 as well?

bertoni
06/30/2017, 06:26 PM
What are the units for that measurement? 7.8 ppm is very high for ammonia, if that's in ppm. I suspect a measurement error if the unit is supposed to be reading ppm.

codyvlc
07/02/2017, 08:09 AM
What are the units for that measurement? 7.8 ppm is very high for ammonia, if that's in ppm. I suspect a measurement error if the unit is supposed to be reading ppm.
My tank is on day 9. Here are my seneye readings for comparison. I was actually searching the forum for references to reading material that would explain chemically what happens when cycling and afterwards when I came across this thread. Any suggestions? I don't understand how I can have really high ammonium readings with essentially no ammonia. https://uploads.tapatalk-cdn.com/20170702/e087bdfcf9e74a55b364a6c3ad938b46.jpg

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tmz
07/02/2017, 10:33 AM
If the readings are accurate ,the total ammonia (NH3/4) is very high. <0.1ppm is a recommended a safe level.

While NH4 is generally considered less toxic to fish than NH3 which seems to pass the gill membranes more easily , high NH4 is still a concern. It can also change to NH3 in a flash (perhaps a fast as a billionith of a second in response to decreased H+ in the water when pH rises.

The proportions of NH3 vs NH4 depend on the amount of H+ in the water; The higher the pH the greater the proportion of NH4 .The total ammonia NSW with a pH of around 8.2 is about 95% NH4 . At pH 8.34 and NH3 at 8.08ppm, I'd expect the NH4 to be around 0.3/0.4ppm;not 0.001ppm.

bertoni
07/02/2017, 04:04 PM
Okay, that ammonia-ammonium level is very high, but within reason for a new tank. I thought that this was an established system. I agree that the ratio of ammonia to ammonium seems to be a bit off, and I'm a little skeptical about the readings. I might get a second opinion on the testing result if I were worried, and I'd consider some water changes to reduce the ammonia level, if I had the energy and there were animals in the live rock that I wanted to save.

tmz
07/03/2017, 12:07 PM
Ok , a nine day old tank(post #3) is likely still cycling in.

The 3 month old tank in post #1 should be cycled by now,though.
Both do show an unexpectedly low proportion of NH3 of 0.001ppm and high NH4: 7.8 and 8.08ppm.

Barro777
07/05/2017, 04:24 PM
Correct me if I'm wrong, but if your source water contains chloramines and you are doing nothing to remove them, then you'll get NH4 reading.

bertoni
07/05/2017, 05:09 PM
Chloramine will show up as ammonia, but the reported level is very high. I suspect that at least some decay is happening. I think the upper limit for safety is 4 ppm chloramine.

codyvlc
07/05/2017, 05:44 PM
I just got off the phone with my water co. It sounds as though they use chloramine treatment for a 2 week period during the winter.

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