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Unread 04/16/2019, 03:09 PM   #1
Bremenguppie
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Oxygen

So I am running a 30 gallon tank. It's been up for over a year. I just did a 50 percent water change over the weekend. Before the water change I ended up loosing a tang I bought about 2 weeks a go. It started not looking healthy over last couple days. Over night I lost a yellow tang that's been in there for probably 6 months.. I've now got a clown fish that's been in there for a year. I checked the nitrates and they r normal. I dont use a sump anymore and just run the tank through a canister filter system. So could I not be getting enough oxygen in the tank all the sudden? I put a air pump in it for now just in case. Does anyone run a air pump on a regular basis? I'm wondering if it's not getting as much oxygen since going to a canister filter but I've had that running for probably a couple months and do water changes about every two weeks. Just curious


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Unread 04/16/2019, 03:41 PM   #2
j.falk
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If you didn't have enough oxygen in the tank your fish would be at the top of the water gasping.


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Unread 04/16/2019, 03:51 PM   #3
Bremenguppie
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Okay. I must have something else going on.


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Unread 04/16/2019, 04:13 PM   #4
j.falk
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Have you checked your ammonia levels?


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Unread 04/17/2019, 02:16 AM   #5
Bremenguppie
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No I haven't. I need to get a new ammonia test kit.


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Unread 04/17/2019, 06:16 AM   #6
Uncle99
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That’s to big of a water change, why so big


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Unread 04/17/2019, 06:32 AM   #7
j.falk
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Quote:
Originally Posted by Uncle99 View Post
That’s to big of a water change, why so big
I was thinking that as well...also wondering if they siphoned the majority of the tank bottom at the time of the water change...that could've caused an ammonia spike.


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Unread 04/17/2019, 06:07 PM   #8
Bremenguppie
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50% seems to be about the usual amount by time I get the bottom all cleaned.. idk if I caused an ammonia spike or not. I'm taking a sample of my water to fish store tomorrow to have it all checked. My clown was struggling tonight too. I set up a 5 gal tank and moved them all to it and they seem to be doing better. I checked my salt level and it's at about 25 which is a little higher than I normally keep it. It's usually around 22 so I'm not sure if that's got something to do with it. Hopefully have some answers after going to fish store


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Unread 04/17/2019, 06:16 PM   #9
Bremenguppie
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I get a lot junk and waste after about two weeks laying on the bottom. I've got some leg hermit crabs, some emerald crabs, a horse shoe crab in the tank to try keep it cleaned up. Could there be something different I can try. I see other tanks that look so crisp and clean and I hear of guys say they hardly ever have to clean them. So what's the trick to that because I have not figured it out yet


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Unread 04/17/2019, 06:30 PM   #10
Jason9488
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What kind of tang?


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Unread 04/17/2019, 07:07 PM   #11
Bremenguppie
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A yellow tang and another one that was part of the tang family. I believe it was called a angel tang but not positive


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Unread 04/18/2019, 07:32 PM   #12
Bremenguppie
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So I took water sample in to be tested and everything was perfect. No nitrates..no ammonia..nothing. they said it was perfect.. then they tested the salinity level.. turns out my $13 meter was no longer accurate. I was at 1.30 salinity. They said that was most likely the cause. So I bought a better meter from them
. Took out about 4 gallons of water and put in just plain rodi water with no salt and got my levels back down to about 1.22.


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Unread 04/22/2019, 07:53 AM   #13
Uncle99
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Yes, that high salinity would be hard on fish.
The higher the salinity, the more difficult it is for fish to process (breath)
50% WC is too much


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