Some people have noticed SC-1000 reduces CYA, but that's not true. SC-1000 sometimes distorts CYA tests.
No, none of our products reduce CYA. As far as we know, only dilution and reverse osmosis (R.O.) filtration are reliable ways of reducing CYA. There are also nitrifying bacteria products that can (with mixed results), but the process is not practical in our opinion.
This question has been brought to us mainly regarding SC-1000. No, SC-1000 will not reduce CYA, but it can interfere with CYA test kits. So it can give the illusion of no CYA in the water, but that's only until SC-1000 binds to metals and minerals. Once that occurs, the CYA test should read normally again.