Lost A Swordtail

[Rainbowneil]

Well yesterday saw my first fish catastrophie since setting up the tank 8 months ago

Discovered at the weekend that my female swordtail had developed mouth rot. No idea how other than i swapped from a 80L tank to a 120L. Chap in my local shop reconed it might have been caused by the fish brushing past an orniment or something in the tank and cutting herself.

I had treated the water two days ago now but must not have caught it in time

Anyway i was gutted to find her lying on her side at the bottom of the tank when i got home last night

 

[theotheragentm]

You most likely need to do water changes more frequently. When you switched tanks, did you switch filters or substrate? The bacteria is built up on surfaces like the substrate and filter media. You may have had bioload without bacteria to handle it. What is in the 120L tank? I'd do a 50% water change now and do 20% weekly as a schedule.

 

[Rainbowneil]

Well i did change from gravel in the old tank to sand in the new

Different filter on now too as a friend had a spare Juwel standard lying around. I put new filter pads in when i fitted it so thought that would have been ok

Im doing 20% water changes every week from now on

 

[theotheragentm]

By switching substrates and filters, you had no available bacteria to handle the bioload unfortunately. Keep up with water changes. You might have to do 20% twice a week for a couple weeks as there is still not enough bacteria to handle the bioload as it builds up.

 

[Rainbowneil]

By switching substrates and filters, you had no available bacteria to handle the bioload unfortunately. Keep up with water changes. You might have to do 20% twice a week for a couple weeks as there is still not enough bacteria to handle the bioload as it builds up.

Thanks for the advise. Will try that and see how i get on