I've tried trusting the Pool Stores and am ready to get off the try 20 different chemicals roller coaster. What do I need to be able to do all my own testing for both my pool and hot tub? I am using bromine in the hot tub and a SWG on the pool. I'm confused between the different test kits and if only 1 kit will cover everything I need. I have started reading the TFPC philosophy.