What is safe chlorine level for pool vac?

[JimK]

Check CL yesterday and CL dropped by 1.5ppm. This is the same rate of decline that was occuring before the SWCG was turned on, although unlike the rest of the week it was sunny and warmer all day yesterday. Initially I set the SWCG to 50%, so I increased it to 60% to see if that helps.

The SWCG panel's readings all look fine; seems like if the cell wasn't generating CL like it should I would get some kind of indication on the panel? I'm hoping by increasing the on time CL will stabilize, but I fear the cell is getting ready to die (this will be the 6th season using this T-15 cell).

Perhaps I should start a new post.....

Edit: I started a new post here:

http://www.poolforum.com/pf2/showthr...-my-cell-dying