The kit I'm using is a Premier Poolmaster; the CYA test kit is also by Poolmaster.

I'm embarrassed to say that I do not know how to test the calcium hardness level... (NB: Will read up on Ben's Kit straightaway!)

When I first posted I only had a gallon or so of bleach to hand. The morning after the figures were almost unchanged.

Today I finally managed to get to Wal-Mart to buy more bleach, so am planning to shock tomorrow evening.

BTW, the pool still looks very clean

PS: What do I tell Tom when he comes to do his bit on Wednesday???