420 gallons … thats 14 gallons per day. Or a little more than ½ gallon per hour. I think if it was the toilet you could see a constant ripple of water in the toilet bowl. As some one mentioned, a little food coloring in the bowl could quickly confirm if this is the toilet or not
According to this website a pool in central florida can expect to lose up to ¼ inch of water per day from evaporation. Using that data a 10 x 10 foot pool would lose up to 15 gallons per day … so if your pool is larger than 100 square feet, it might be just evaporation
http://osceolaaquaticsinc.com/is-you...is-it-leaking/