As per what the Mods here have said many times, you may need to add bleach many times throughout the day to keep chlorine in the water until your CYA comes up to a reasonable level. I've seen also many times here, wait 15 - 20 minutes after dosing to give it time to mix, then let the kids swim.

If you have time, read through many of the threads here. It will help immensely!

Also, even with a small pool like what you and I have, the Taylor K-2006 is a HUGE help in keeping your water in good shape!