Hi all ive been running the TFPC method now for 6 months really happy with it no cloudy pool no green pool all is good .Then we decieded to let the local kids use the pool for a small fee towards running costs ( i live in a relatively poor area in north east Thailand) so now we have had temps up to 40oc water temp of 32/33 and up to 50 kids swimming a day .What im doing at the mo is checking FC 3-4 times a day and keeping to the higher range of 5-6 adding chlorine as soon as it drops down to 2.5 .My CYA (45) also running the pump longer (normally 5 hours) 10-12 hours a day and i have to vacum every morning and its staying pretty clear not 100% but pretty good considering .So has anybody got any helpfull hints ive been using 8-10 litres of 10% chlorine every day as well hopefully next week i will get my generator dont know if it will keep up with this though ,wont be for ever as its the school holidays and the hotest part of the year at the mo .