Fish Dying Fast

[cdrus]

hi good furom hope you can help

im steven from shropshire

i have a large tank with many tropical fish till late over the last few weeks i have lost all my best ones 15 ?

they like tonight we was talking about the to good ones and they looked healthy but 1 hr later
the one fish started to look like its drunk???
moving around badly droping to the bottom and upside down in tank then just like that it moved fast round tank and droped dead with in a few mins.
now i have tried the pond shop we have tried all types of fixs with no joy

water ph,nitrat 02,ect all tests are within limits i do daily checks

so have any of you had somthing like this

steve

 

[angelfishguy]

was your tank cycled?
how long has it been set up?

 

[Harlequins]

Hi Steve & welcome

We will need some more info- what is your exact reading for ammonia/nitrite/nitrate & ph?

How big is your tank and how long has it been set up?

And has angelfishguy mentioned...have you cycled the tank?

 

[Assaye]

Could be a few things:

+ Immature tank leading to poor water quality - what are you exact readings for ammonia, nitrite, nitrate and pH?
+ Poison in the tank - has anyone sprayed air freshener or anything? Any chemicals?
+ Poor maintainence leading to unstable pH/nitrate/hardness - how often do you do water changes and do you clean your gravel?
+ Poor quality test kit leading to inaccurate results and a false sense of security - what tests do you use and are they in-date?
+ Illness - any new stock recently? Do you isolate your fish for a few weeks before they go in your main tank?
+ Stress caused by overstocked tank/too small tank/incompatible fish/not enough cover/poor decor choice/etc - can you get a photo of the tank and tell us the stocking and capacity of it?