I prep for taking over out new house/pool, I've been doing some reading on TFP, as you do
Looking at some of the threads here about bleaching the pool back to health made me think. With people spending $70 at a time on bleach, (and maybe doing it 2-3 times), why not just dump the water and start again?
Not knowing what the cost of water is where you are I can only go on numbers where I live. I will have an approx 38000L pool (or somewhere around there). With water costing $1.30 per 1000L will cost approx $50 to refill.
I know it will take time to empy and refill, but then so does bleaching. Or are people fill rates such that it takes less time to bleach it back to health? (I have no idea how long it will take to fill my pool till I take over and do some flow tests from the hose.)
Is it because each time the pool is emptied it is at risk? If so from what?
Some places water is not as easy to come by/expensive.
Some people want the chalenge.
People have not done the numbers?
People are a conservationists, and want to save water?
Why else would people not just drain and start again?