Platie Fry Keep Going To Surface And Back Down - Tank Change

[Deleted member 107737]

Hi All,
 
yesterday I did a tank swap. 20 litre to 54 litre platie fry babies.
 
moved everything ( filter, subtrate, plants)
 
Woke up this morning and they were all near the top of the tank.
 
I then switched my bedroom lights on ( not the tank light).
 
Now they are swimming a bit near the gravel, then shooting up to the surface, then back down again, around a bit near the gravel, then back up to the surface again over and over again.
 
I made sure it was dark yesterday after the tank change.
 
The temp is 25C. I know the guy that gave me them had them at 26-27C but the fish shop told me that is way too warm
 
Thanks,
 
Dave

 

[techen]

The only thing I suggest is do you have good surface flow/movement for the exchange of oxygen in the tank?

 

[UpSideDown]

They might not be getting good oxygen.