Ammonia, nitrite or temperature rise are the usual causes.Why are my fish all of a sudden swimming round the top of the tank at the surface?
Any ideas please.
Thanks
test for ammonia...
if it is too high, do a 25% wc
test for ammonia...
if it is too high, do a 25% wc
I dont have an air stone, my readings are ok according to my Tetra test kit, I'll try the water change.
Thanks folks.
Do i need an air stone?
Do i need an air stone?