Healthy fish just died

[Fishlover3578]

My water has been good other than about .25 before WC and I did WC 2 days ago... No sighns of anything except one unhealthy gourami and I had a guppy male and fry slow down in swimming yesterday and dead this morning... Confused

 

[aquandrew]

My water has been good I did WC 2 days ago... No sighns of anything except one unhealthy gourami and I had a guppy male and fry slow down in swimming yesterday and dead this morning... Confused[/QUOTE

have you moved the fry at all? did you do anything out of the ordinary? is your temp stable?

 

[Fishlover3578]

No I have not changed anything except traded spong in filter intake for netting cuz I had a tiny fry get sucked up tube

 

[aquandrew]

well that is likely what causes your ammonia spike, you tossed some of the BB. has the tank with the fry had meds added to it?

 

[Fishlover3578]

The sponge was tiny and not there long anyways and yes I used ich meds like a week ago and carbo is in to remove it plus since then done 2 50% WC ... Just tested water and
Ammonia is between 0 and .25 maybe closer to 0
Nitrite is 0
And nitrate is. Between 0 and 5 def not enough spike in anything to kill a fish

 

[Fishlover3578]

I do have a female guppy tht once while in temporary overcrowded tank killed a male half her size trying to eat him but this tank is not overstocked .... Maye Petsmart gives bad fish but I ha him for over a month. I did same things to 20 gal and no dead fish fry or adults

 

[Delapool]

Was the water temp on the water change the same as tank? I've had platys get very slow and hang around the surface in a quiet spot. Usually noticeable the next morning. The only thing I have been able to think of is a water temp difference even though the tap water doesn't feel much colder.

 

[Fishlover3578]

It felt close to me ... Maybe a lil cool but not much... Guess next time ill try do it a bit warmer than tank cuz that never causes problems if its a lil warmer

 

[Delapool]

Would be keen to know how it goes. I must find a spare thermometer to check tap water here over winter but we are into summer here now. I only do about a 25% water change each week and I didn't think the fish would notice but the rosy barbs are much more active as well.