I'm familiar with the "Best Guess" Chart, but aren't there drawbacks to keeping the chlorine that high? I have a 1 1/2 year old. And can you float a concrete/gnite pool? I though that was only relevant to liner pools? Also, does chlorine consumption go up when you're maintaining that high a level? Sorry about all the questions, but i'm trying to make sure i do what's best... Thank you for the inputs and answers!