my rays are still being inactive and not eating as they used to.. i check parameters again today and ammonia was at .1ppm and nitrite at 0ppm and nitrate at about 30-40ppm. they started acting this way right after i sold my silver arowana i had in the tank. it's almost as though they are scared to move around without him. do you think they are just adjusting? temp of tank is at 85ºF. anny suggestions? oh and their colors look great, they are not pale at all, no visible parasites on their discs.. im in the dark here.