Special test kit needed for SWCG?

[lauralou]

I recently (two weeks ago) converted my 20,000 gal. inground gunite pool to salt water chlorine generator. Since then, I have tested my water using the Taylor Complete Test kit that I've had for a few years (with new reagents purchased this past spring). I'm unable to get a reading at all for chlorine, but my other readings are:

AL= 90
PH = 7.4
CA = 250
CYA = 90

Must you use a special test kit for a SWCG pool?

My water is clear, there is no algae, and the salt is 3100 ppm according to the LED display on the on the unit (Hayward SwimPure). I haven't had the water tested by the pool store.