Hello all. I'm not really new to pools, but new to my new sand filter(previously had a cartridge filter). I was trying to vacuum my pool to waste and for some in reason in my mind I thought I was, but I set the valve on backwash. So I vacuumed a bunch of dead algae and dirt on backwash. I was told this was a big NO NO by my pool guy who installed it. What can I expect in the future after doing this?
thanks in advance.