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post #1 of 22 Old 09-13-2012, 10:24 AM Thread Starter
water change woes

So I did a water change last night in my saltwater tank. I pre mixed my water the day before and I added a water treatment as well. Before I changed my water I also put a heater and a spare power head in the buckets, tested my water for correct pH and salinity. I figured that there would obviously be some disturbance in my tank with this project but this morning I woke up and my two damselfish had changed to a darker color and were laying on the bottom looking like they were gasping. Things got worse - they started swimming erratically and were getting blown around by the power heads. When I came home from work one was laying on the bottom and he ended up dying. Now the other one is drinking around the surface. I have no idea what I could've done. I put an air stone in to aerate the water. My firefish seems to be alright...eating, swimming normally. Anyone have any idea what is wrong?
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post #2 of 22 Old 09-13-2012, 04:30 PM
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So I did a water change last night in my saltwater tank. I pre mixed my water the day before and I added a water treatment as well. Before I changed my water I also put a heater and a spare power head in the buckets, tested my water for correct pH and salinity. I figured that there would obviously be some disturbance in my tank with this project but this morning I woke up and my two damselfish had changed to a darker color and were laying on the bottom looking like they were gasping. Things got worse - they started swimming erratically and were getting blown around by the power heads. When I came home from work one was laying on the bottom and he ended up dying. Now the other one is drinking around the surface. I have no idea what I could've done. I put an air stone in to aerate the water. My firefish seems to be alright...eating, swimming normally. Anyone have any idea what is wrong?
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what are your parameters?it sounds like ammonia poison.
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post #3 of 22 Old 09-13-2012, 05:13 PM Thread Starter
Yeah that's what I thought at first but my tests are showing nothing for ammonia, nitrite or nitrate and a pH of 8.1. My water is also at about 400 for calcium and 9 dkh for alkalinity.
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post #4 of 22 Old 09-13-2012, 05:33 PM
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Yeah that's what I thought at first but my tests are showing nothing for ammonia, nitrite or nitrate and a pH of 8.1. My water is also at about 400 for calcium and 9 dkh for alkalinity.
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test you water from the source aka tap or after ro/di system.if there is any ammonia that could have killed them even tho its not showing up now cause you're tank ate it by now.
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post #5 of 22 Old 09-13-2012, 05:46 PM Thread Starter
Ah I see....I will do that. I guess the well had a bleach treatment a few weeks back that I didn't know about
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post #6 of 22 Old 09-13-2012, 06:50 PM
Have you watched those Damsels chase each other prior to your WC? I always advise against those fish, as they will chase each other to the point of death. But, one never knows. If your other fish is fine, thats what my guess is. They killed each other.
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post #7 of 22 Old 09-13-2012, 07:08 PM
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How much water did you change?



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post #8 of 22 Old 09-13-2012, 08:42 PM Thread Starter
Yeah they chased each other a little bit. Mostly one that was slightly bigger chased the other one but they were healthy before. The bigger one actually died first. Additionally as the night has gone on my firefish isn't doing so well either. I figured he was just stressed because he was swimming and he ate but now I'm not so sure. He doesn't seem to have any strength. I changed like 10 gallons out of 55 so just under 20 percent. I'm at a loss and its looking like a newby move cost me my tank. Sucks
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post #9 of 22 Old 09-13-2012, 08:56 PM
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Was the original water from bleach treated water?



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post #10 of 22 Old 09-13-2012, 09:14 PM Thread Starter
I used well water when I first filled the tank but that was before it had the bleach treatment.
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