For home testing, this is my personal favourite. It’s easy to do and very accurate – much more accurate than using a liquid test kit because of human error when it comes to matching up the colours and using chemical droplets.
Take your water sample and quickly drip one, dry strip into the water. Hold it still in the air for about 15 seconds (do not shake off the excess water). Then match up the colours of the strip to the back of the bottle to get your readings.
There are all different kinds of test strips you can buy that check for all sorts of things, but you really only need to check for pH, alkalinity and free chlorine.
Use test strips at least once a week. I like to check my water every other day. And bring a sample to your local pool store once a month to have it professionally checked – also when opening and closing your pool.