i have to wait on the fish until i get more lr in tank.only have about 50lbs.i made the mistake of putting to many fish in tank at one time,i guess it could'nt handle the bio-load so i was told,because i lost 9 fish in a matter of 3 weeks.heavy loss to some great fish,ifelt so bad and stupid because i knew better.only had tank 4 months not a wise move,but i could have had a bad fish, went to a different lfs and maybe paid the price. did not lose all my fish.i did 20% to 30% water 4 days straight, got the parameters all down to 0ppm and just did another test nitrate went back up to 20ppm.