No. Seriously. 5 and 3. when you're doing a fishless cycle, you want to produce an overabundance of bacteria. what is not needed will die off and everything else will live according to the amount of nutrients they get from the fish. doing just .5 and .3 isn't a lot, when you're cycling a tank you can get daily spikes of 1 or higher. enough bacteria to take care of .3ppm of ammonia is going to be far too low to take care of the fishes' needs once they are added.