I'm just getting started with the BBB method and after obtaining a good quality a good quality test kit I have the following
Calcium 550 ppm
CYA approx 400--really don't know off the scale just an extrapolation.
Everything I have read the only way to lower the CYA is to drain and replace. The question I have is that by starting the BBB method and not using a stablizer will the CYA eventually come down byt slpash-out and evaperation replacement or should I do a drain and replace?