I might try to renegotiate the pool maintenance duties in your family .

If you've been maintaining the pool with BBB and it was nice and clean and clear AND saving your family money, then you shouldn't have to change. I'd suggest letting your DH maintain it with the pool store chems if that's what he believes is best . Just be sure to get a membership at a local pool or club so you can still swim when things don't work out for him .