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Fish dying when do a water change

simon_the_plant_nerd said:
You can’t live too far from me so if you would like to do a comparison of your water and mine, I’d be happy to help you out. I have a TDS meter and some various test kits which I wouldn’t necessarily rely on for quantitative measurements but will do for a comparison between the two waters, just to see if there is any difference.

Should give you an idea if there’s something leaching into the water from your pipe work.
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Simon that is very kind and if you are happy to I’d be grateful. I can PM you where I live, or I can take some water and meet you halfway if that’s easier. I’m EH37
 
I used to use stress coat and switched to prime around 6mths prior to moving to where I live now.
 
simon_the_plant_nerd said:
I’m inclined to agree with this too. The concentration of contaminants in water would ordinarily need to be much higher to cause harm to humans than to aquatic life.

Perhaps bottled water is mainly drank in this household. Or, considering they are also in Scotland, they may be like me and have a healthy fridge full of Irn-bru?
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Interestingly, I drink boiled tap water and I’ve said since we moved in to this house that it has a funky taste. We’d bought a new kettle though as the movers lost our old one and it took weeks to find it. That “funky” taste has never dissipated and I always thought it was the plastic on the kettle. Maybe it is the water after all.

As far as the other poster mentioning the discrepancy of pH, I have two hunks of wood in the tank and usually lots of leaf litter which I believe drop the pH?
 
Myrkk said:
I used to use stress coat and switched to prime around 6mths prior to moving to where I live now.
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So prior to moving you used prime for 6 months without issue?
It's confusing, lol. Can I suggest you change 10L of water add only 0.25ml (5 drops) of prime to the bucket that contains the water going in and gauge the reaction of the fish.

I think doing the above might help us start ruling things in or out.
 
John q said:
So prior to moving you used prime for 6 months without issue?
It's confusing, lol. Can I suggest you change 10L of water add only 0.25ml (5 drops) of prime to the bucket that contains the water going in and gauge the reaction of the fish.

I think doing the above might help us start ruling things in or out.
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the fish are still a little stressed and panting, so I’m going to wait until they are stronger, then I’ll try this. I really do not want to lose any more.

I’m sorry it is so confusing. I will try and get the time to do a bullet point list which might clarify some of the questions.
 
Good point! Didn’t think of that, brain is in full on juggling mode at the moment. Multi-tasking is taking a hammering.
 
Myrkk said:
I used to use stress coat and switched to prime around 6mths prior to moving to where I live now.
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John q said:
So prior to moving you used prime for 6 months without issue?
It's confusing, lol. Can I suggest you change 10L of water add only 0.25ml (5 drops) of prime to the bucket that contains the water going in and gauge the reaction of the fish.

I think doing the above might help us start ruling things in or out.
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This could be a combination of your new water having an issue and the excess of prime dosing.
As a trial, I would suggest you to bubble your new water overnight with an airstone and add the minimum recommended dose of prime as suggested by @John q. If fish keep reacting the same way then clearly the water could be at falt here and the excess of prime you have been adding so far is just making things worse.
 
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Myrkk said:
the fish are still a little stressed and panting, so I’m going to wait until they are stronger, then I’ll try this. I really do not want to lose any more.
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Have you increased the air within the aquarium to as much as possible? i.e. maximum surface agitation, air stone etc? Sorry if I missed that already, but I will do as much as possible to maximise oxygen exchange at this point as the fish are still panting.

Another thought here is to go and buy some Reverse Osmosis water re-mineralise with something like APT Sky (APT Sky just for convenience, really) so you know you are a) putting in pure water, b) controlling the parameters to some degree, c) removing the old water which potentially could be a cause and d) you do not have to use any water conditioner. You can get 100 litres for under £4 from Spotless Water or some LFS, and Sky is around £15-£20.
 
The Cory is sitting at the bottom and doing his usual top of the tank darts, albeit a little more often than usual
 
Two images, sorry can’t lift the top of the tank at the mo as have a shoulder injury so a pic from underneath
 

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Myrkk said:
The Cory is sitting at the bottom and doing his usual top of the tank darts, albeit a little more often than usual
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Did you lose any Cory's after a water change?
 
I know I sound like a stuck record, but how is the aeration in that aquarium? The pictures don’t show me much.
 
Cory's have the ability to breath air just above the water surface!
This behavior is perfectly normal and is not an indication that anything is wrong with the fish. However, if this is done in excess, it can indicate poor water conditions.
This leads me to believe you had low Oxygen levels prior to dosing Prime...and subsequently after dosing Prime the levels became so low the other fish suffocated.
 
G H Nelson said:
Cory's have the ability to breath air just above the water surface!
This behavior is perfectly normal and is not an indication that anything is wrong with the fish. However, if this is done in excess, it can indicate poor water conditions.
This leads me to believe you had low Oxygen levels prior to dosing Prime...and subsequently after dosing Prime the levels became so low the other fish suffocated.
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I agree this is very plausible.

I really would like to see some (temporary at least) oxygen generation in that aquarium.
 
Hi @Myrkk

Just a couple of quick clips of my tank surface to give you an idea of my surface agitation which helps with oxygenation. It's generated by the filter outflow (spraybar quite weak) and a couple of airstones one at each end of the aquarium). Not saying it's perfect by any means, but maybe useful for illustrative purposes. In all things aquatic I defer to those more experienced than I.



 
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