100% daily w/c dechlorinated and same temp. Feed every other day. I was able to cycle a tank this way (even with heavy feedings daily), heavily stocked with Discus. None died they were healthy all the way through. Adding prime (a little higher then recommended) will help to detoxify ammo/nitrites also. You have a good chance, I don't agree with the comment above that says most of your fish will probably die.