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dmaccy dmaccy
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  • Posted on: 26/10/2020 19:07
Re: Problems within minutes of water change #1
The response was quite remarkable. We actually only lost one cory and one emperor tetra. I thought we were looking at losing 7 or 8 fish, given how lifeless and immobile they were. All I did was an immediate additional water change, and another one the following morning, and left the airstone on all night.

It has been suggested to me elsewhere it may have been hand sanitiser as apparently it lingers for hours even if you wash your hands! Other than that my only other thought is to ring the water authority and ask if they were aware of nay increase in trace elements.


dmaccy dmaccy
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  • Posted on: 23/10/2020 21:46
Problems within minutes of water change #2
Hi - feel like I'm here more than I would like, seemto be running into all sorts of problems!
However your help is always fantastic and works a treat.


Just completed a water change as I do every week. But within 5 minutes of the water change several fish were behaving erratically. Five of our seven emperor tetras were swimming eraticly like they had swim bladder disease and two of our four corydoras were doing their surface dive seemingly once a minute (they normally seldom do this).

Two hours later more fish are now struggling.

The new water going in was within 1 degree of the tank temp and ph ok.
Tested tank parameters using both strip and liquid testing kits.
pH 7.4, ammonia nil, NO2 <0.3 (lowest read rhe test kit allows), Cl2 nil.

New water was treated with tetra aqua safe as usual and quantities measured as prescribed.
Standard water change including gravel vac, wiping the filter box, wiping the glass and trimming plants.

Given the speed I suspect poisoning of some description but given testing parameters showed clear and water came from same source as always not sure what this could be.

Any offers of what this is or anything we can do to save rhe fish?


dmaccy dmaccy
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  • Posted on: 20/10/2020 17:28
Re: Any ideas what this is? #3
Lighting 9am - 7pm

No fertiliser used


dmaccy dmaccy
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  • Posted on: 19/10/2020 17:13
Re: Any ideas what this is? #4
Attaching photo now

Attach file:



jpg  23256_5f8dbb28e3ebe.jpg (2,325.15 KB)
23256_5f8dbb28e3ebe.jpg 4000X3000 px


dmaccy dmaccy
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  • Posted on: 19/10/2020 17:12
Any ideas what this is? #5
Can anyone identify this on my plants please? It looks like a whispy dust, I know Halloween is coming up but its attached to all my plants and occasionally suspended in the tank.


dmaccy dmaccy
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  • Posted on: 14/8/2020 19:53
Water change temperature #6
Hi everyone again

Asked a few questions on here before and got very helpful answers. Probably a touch simple this one, but genuinely interested if I can reduce stress risk.

When I current do a water change I check the temperature of the water going into the tank and I've got quite good at getting it fro the tap within a couple of degrees Celsius off the tank.

Anyway this time I did the same and the tank temperature seemed to drop 1 degree after the water chnage.

Is this OK and is there a better way to get the new water to the right temperature?


dmaccy dmaccy
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  • Posted on: 21/7/2020 19:21
Re: Mysterious deaths - all water parameters ok #7
Thanks for the into both, will get a liquid test and see what happens


dmaccy dmaccy
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  • Posted on: 21/7/2020 14:18
Re: Mysterious deaths - all water parameters ok #8
There is no ammonia showing on test strips. I have used the tetra strips and api and neither show the presence of any ammonia either before or after placing fish in the tank . So I find it unlikely to be ammonia. We also added some tetra safe start to artificially increase the bacteria presence when we added new fish too


dmaccy dmaccy
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  • Posted on: 21/7/2020 11:59
Re: Mysterious deaths - all water parameters ok #9
Testing done by Tetra 6 in 1 test strips.

Nitrate and nitrite low numbers (negligible) -little or no colour change on test strip.

Total harness about 10 and carbonate hardness about 10 too.

No ammonia measuring on test strips (used both Tetra and API)

pH approx. 7.2 - 7.5


Acclimatised fish - Approx 1 hour in bag to align temperature, then pour tank water into bag, left fish inbag for 15 minutes approx. Then do 6 in 1 test on water in bag to ensure close alignment of pH.


dmaccy dmaccy
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  • Posted on: 21/7/2020 10:38
Mysterious deaths - all water parameters ok #10
Hi,

I am getting very high mortality rates when we are putting new fish in our tank.

We recently bought shoals of black emperor tetras and purple emperor tetras which were added to a tank which already had partial shoals of each (after a white spot outbreak). The white spot was treated and the tank left for a few weeks, so all clear.

We added 5 new purple emperor tetras and 5 new black emperor tetras recently and have had a large number of deaths . This also happened the previous time we added a shoal of fish and we are at a loss. The only hypothesis we have is that one of the fish in the tank now (it was one of the new ones) appears to have had his tail fin badly nipped and wondered if it were possible for one of the other fish to be bullying the others and causing them to die? But given they are going from seemingly healthy on an evening to being dead the following morning I'm not sure if this possible?

All the deaths are occurring overnight with fish that are seemingly healthy the evening before and then are gone when we turn the light on the following morning.

All tank parameters ok and consistent. Temperature is 24.5 degrees.

Any advice appreciated



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