I actually just found Lowry just before I saw this post and gave them a call. they have given me a couple options to get a kit by the end of the week. It is much more expensive in Canada, he explained it was mainly because they had to add a complete set of French instructions and labels as well as some safety information regarding the chemicals.

I have to completely agree that the CYA test from the pool store is not accurate, I got my water re-tested yesterday and they told me I was a 50 - that is a drop of 20 in 24 hrs, which I believe to be impossible (from reading posts here). I am beginning to think the 70 was a mis-read, as all previous tests all summer have been below 50, and since the last reading below the 70 I had only put 2 pucks through the pool.

my new readings were;

FC = 5 (a drop of 4 in 24 hrs)
TC - I had someone different and she would not give me this today - told me it didn't matter
PH = 7.6
Alk = 90
CYA = 50
CH = 250

I told them that the water was cloudier since I turned off the feeder, so I though I should start adding chlorine because I dropped 4 points over night. They started telling me they were worried about chlorine lock, and I told them I was worried about the algae growing on the side

Long story short, I bought more 11% chlorine (just in case), and by the time i got home there was a response from Watermom confirming my approach, so I shocked to 20 and turned the filter on recirculate and brushed the whole thing.

I re-tested this morning the best I could using distilled water and figured 16-18 so I added enough chlorine to raise by 4 (in case it was 16).

I will test, adjust and brush when I get home, but the water was already looking much better this morning.

Thanks for the advice so far, i will keep you updated