We are first time owners of an Intex, 12'X30" pop-up pool for the 'grands' to play in. I have read that household bleach is good to use to keep in clean. How often should I use liquid bleach? Will 3/4 of a cup be sufficient for approximately 1400-1500 gallons of water? (one place says 1440, one says 1485) Should I only put it in in the evening? And…one more thing…how long do they have to wait to get in after the bleach is added? (PLEASE say it's not too long…they are READY! lol) I have, contrary to popular belief, read the book, however, I am just concerned I will do something wrong. Thank you for all your help.