dead oscars yet a healthy stingray???

[Miguel]

You cannot learn a lesson without going deeper.

You say the tank was empty during cycling. Did you add anything to promote bacterial growth and the nitrogen cycle?

What type of wood did you put into the tank? Was it aged and dry, or did you pick it up somewhere?

 

[komodo182]

what was your ammonia, nitrite and nitrate?

 

[ar0wan]

waste of $20 on oscars haha

I find this statement redundant

 

[JeremyXXXX]

my parameters were the same, stingray was still happy and I cycled with chemicals and fish.