I setup a 75g a little over 2 weeks ago. The ammonia had spiked and is now not present for 3 days.... Is it too early to put fish in the tank...? I want to put my dats and rays in it or are they too fragile?

Do I still need to do this step?? Nitrite never really spiked though....but does read 0ppm#1 - remove fish
#2 - drain the tank
#3 - refill the tank with fresh water
#4 - buy seachem's stability or marinelands Bio-Spira
#5 - dechlor the water
#6 - add stability or Bio-spira AND FOLLOW THE DIRECTIONS
#7 - put fish in
#8 - enjoy your tank.
I've setup a Do I still need to do this step?? Nitrite never really spiked though....but does read 0ppm