K-2006A only gives you enough reagent to do 6 CYA tests. I used that up in a month. Wish I had known better back then.
I just bought a house with a pool 3 weeks ago and so glad I listened and bought the bigger test kit and I already had to reorder the FAS-DPD chlorine test since I was doing a SLAM with high CYA so lots and lots of drops. I listened to pool store first week and my pool continued to deteriorate. Found the forum started slam as close as i could without having a good test kit then really did it correct when test kit arrived. Once I started following advice here my pool improved each day -- slowly but at least it didn't get worse like it did when I followed pool store advice. I can now see the bottom of my pool and it will be beautiful for party this weekend. Test kit might have seemed expensive but cost me less than the stuff the pool store sold me that didn't help and will save money going forward without overpriced chemicals. Listen and follow the advice and it will clear up but will take some time but you do have to follow the advice as given.
Ditto to this... The other effect of not having enough reagent is that one starts skimping on doing the test, to save the reagent for some future date when you 'really need it.'K-2006A only gives you enough reagent to do 6 CYA tests. I used that up in a month. Wish I had known better back then.