I recently had my aquarium up and let it cycle for about 4 weeks. I had it up and running but something happen causing me to have to empty it and clean everything. I had two fish in it at the time. Since I don't have another tank, my fish are in a temporary home...a.k.a. a bucket. They are doing fine in there but I don't know how long that will last. I know my tank probably isn't cycled all the way through. The ammonia is at zero and so is the nitrites. I don't want to put them in the tank and cause the tank to get cloudy or anything. When is it safe enough to put them back in the tank?