MarshallUK

Hi i am new to Hot Tubbing and need some advice please. On my control panel i have been told that if i press the light button for a few seconds it comes up with the filtration cycle adjustment. It ranges from 0 - 12..........am i right in thinking that if i select 0 it turns it off, select 1 it is one hour cycle per day, select thats 2 one hour cycles per day and so on?? I have it set on 1 but everytime i go to the tub it seems to be pumping away. Is this usual?.....do the pumps go all the time plus the filtration cycle, or should the tub be dormant for most of the time as i have selected 1?? i hope i havent confused you!