Greetings, Im a new poster. Presently my pool is clear, Ive ordered the TF100 test kit. Excited to keep the pool clear all summer. I was searching for a location near me to purchase liquid chlorine to have on hand for days when the SWG doenst keep up while Im trying to figure out the proper settings. I found a product called swim shock liquid chlorine at Menards on sale for 2.49. Is this the proper stuff?