I think is 4.5-4.8Can you post your test results to share with us?
I forgot, I did it before 3 daysCan you post your test results to share with us?
I thought so definitely don't transfer the Oscar to another aquarium it probably will die instantly. Tbh 4.8 is to acidic for even the Oscar.
I forgot, but I change 50% waterDid you also get test results for ammonia, nitrite and nitrate? If so, please post them also.