I must admit I disagree, 10% daily has always worked for me with low stocking.
I don't see how you can say that a specific amount per day will suffice, surely you need to have tested and know how much ammonia & nitrite you are trying to dilute.
In the specifics of this instance, maria madeline has 5 platies and 3 guppies in a 48l tank. I feel certain that levels will rise far quicker in that situation than 10% per day can cope with. I stand by the maths - if you have 0.5ppm ammonia, and you dilute by 10%, you will still have 0.45ppm, and that is still lethal for fish.
