After reading most of the topics on this forum i make conclusion that to become a happy hot tub user all i have to do is :
make sure my water chemistry stay on
ph 7.2-7.8
ta 120-180 ppm
bromine or chlorine 6-8 ppm
and check the water at lest every 3 days ( no time for everyday checking)
shock my water every week with 6-7 oz of bleach ( aprx 177 ml ) $$$$ saver
change my water twice a year
never use any cream, lotion, sunblock before entering hot tub
shock with bleach after heavy bathing or party
never never pee in hot tub
Thanks for all the help and tell me what else i should know