Have just finished converting to chlorine and am trying to balance the water and start the SWG. My pool is a 28' diameter Dough Boy round AG with 1.5HP pump and sand filter. I have dumped in the salt and brushed it around but it is not yet all dissolved. Have also added CYA to raise level to 75ppm and am also waiting for it to dissolve (which apparently can take up to a week). My question is do I have to wait for everything to dissolve before I test for TA, CH, pH etc or can I go ahead and test and start the necessary corrections already. I went ahead and tested anyway just for the sake of it and pH was 7.0, TA was 110, CH was 250. Also, how soon can I let the kids start swimming?