I noticed someone said in another thread in the Forum "Its safe to swim up to SLAM levels".....and I assume that means any SLAM level associaed with any CYA level. That gets in to levels above 35 ppm with CYA at 90.
Yet for ever and all time I have read "Do Not Re-Enter The Pool Until CL level is Between 1-3 PPM.
So, am I to assume the mean nasty "pool industry" not only wants us to buy all their products we don't need, but to also keep us out of our pools???
What's the truth here?