If I get my cya to a good level with stabilizer at the beginning of the season, and use just bleach (not pucks) to chorinate, cya should not fluctuate much? I haven't gotten my test kit yet and am using up my test kits that do not test cya. Last year I used pool store analysis, and have been reading all these articles about how inaccurate it is!
So, if I start with water with 0 cya, use the calculator to add the amount recommended for my pool size, it should be ok not to test for a while? Since my pool has many hours of direct sunlight (basicially from 10:00 am to 6:00 pm), a cya level around 60 is a good goal?