Actually, 0 to 180 is fine with vinyl... You CAN go to 190 or 200, but you start pushing your luck and can get scaling. If you have calcium in your pool, it can start getting cloudy at that level. Normally, in vinyl, calcium can go to 500. But if Cal is 500 and TA is 200, I wouldn't bet against your water going cloudy.

As for 130-140---GO SWIMMING and don't worry about it!