Opened the pool 2 weeks ago -- first full season using BBB, but 2nd summer and it is fantastic! Had I not had to install shaft seals in my new pump, we'd have been swimming in 2 days instead of the 3+ weeks it would take me using the old method! The only other issue is my using the pump capacity (24k gallons/8 hours) as my pool volume (15.2k gallon) and waaaaaay overdosing with Cl initially. Down to 47oz of bleach every other day -- this is soooo flippin' easy!! Thanks TFP for making my life so much easier!!