I LOVE TFP and my TF-100 because I am saving huge amounts of money and have perfect sparkly odor free water and a very easy to maintain pool.
We have had very heavy rains this year. 2-3 inches many times, 5 inches 2 times and 8 inches in 30 hours that flooded the pool with yard dirt, you could not even see the 1st step.
I never had to buy any chemicals or shock the pool, TFP is amazing! The only thing I buy at the pool store is 4 gallon cases of 10% bleach and acid. I don't even bother to get the water tested, they will just try to sell me a $50 bottle of PH+. After fighting a loosing battle with algae for years I have not seen one speck this summer. My summer chemical cost is about $15.00 a month and I run the pool less.
I think I got some old bleach. Has anyone figured out an easy way to test the bleach with the TF-100. I also have creeping rising PH. I need to add acid 2-3 times a month. Before the drain & refill I never needed acid? Not a big deal but just wondering.