bonzo
Fish Crazy
I,ve had some unexpected deaths in my tank this past few days. I,ve tested the water with a liquid test kit and its fine. Details are below. I,m baffled. 
Tank size: 350 litre
pH: 7
ammonia: 0
nitrite:0
nitrate:0
kH:
gH:
tank temp:28
Fish Symptoms, Generally at start they just arnt themselves if you know what i mean then they start swimming into things looking a bit delerious, hanging around the top of tank then sinking. then lying on bottom of tank for ages then going crazy trying to get to the top and sinking tail first then dying. Nic took 3 days to die and young rotkeil went within 24 hours. No other fish showing symtoms yet but there was a 2 day gap between the 2 dead fish.
Volume and Frequency of water changes: 50% weekly
Chemical Additives or Media in your tank: fluval internal
Tank inhabitants: two six inch rotkeil, two 2 inch rotkeil (1 now dead), two 1 1/2 inch GBR one 2 1/2 inch nicuraguan (now dead) and 5 cardinals
Recent additions to your tank (living or decoration): cardinals but they seem fine
Exposure to chemicals: none known
Tank size: 350 litre
pH: 7
ammonia: 0
nitrite:0
nitrate:0
kH:
gH:
tank temp:28
Fish Symptoms, Generally at start they just arnt themselves if you know what i mean then they start swimming into things looking a bit delerious, hanging around the top of tank then sinking. then lying on bottom of tank for ages then going crazy trying to get to the top and sinking tail first then dying. Nic took 3 days to die and young rotkeil went within 24 hours. No other fish showing symtoms yet but there was a 2 day gap between the 2 dead fish.
Volume and Frequency of water changes: 50% weekly
Chemical Additives or Media in your tank: fluval internal
Tank inhabitants: two six inch rotkeil, two 2 inch rotkeil (1 now dead), two 1 1/2 inch GBR one 2 1/2 inch nicuraguan (now dead) and 5 cardinals
Recent additions to your tank (living or decoration): cardinals but they seem fine
Exposure to chemicals: none known
