Powerhead Alters Behaviour

[JDs4me]

On adding a 3000 lit/hr powerhead to my 4', the Ilyodons have completely changed their behaviour, now schooling facing 'upstream' together awaiting food (vid link below)...if your fish behave naturally in this way then this has to be the way to set up the tank - I now leave it on in the daytime, and off at night to calm things down for them and the cats...seems to work really well!

 

[tribalbrit]

My Congo's do the same thing.

 

[Dazzler666]

All my fish (tiger Barbs, rasboras, lemon & beacon tetras) do this also!!

 

[KISSfn]

All my fish except the Danios love my Koralias.