My first suggestion would be to immediately order one of Ben's test kits, so you can properly test your own CYA, as well as all your other levels, that the other store kits can't do. Plus, I never trust pool store readings, as I feel like they smudge the results in their favor to make you "need" to buy more products from them.

Someone else can help you lower your level properly, as that is never my problem, as I always seem to drop to ZERO CYA over the winter. Strange, but it lets me start with a clean plate each year in the CYA dept.

Good luck,
John