I've been reading the Pool School info and the various links that you have referred me to, but I'm a little bit of a slow learner. Here are several questions with regards to balancing the water in my spa.
1. Since I use bromine, do I need to test the FC levels? Or should I just focus on keeping the bromine levels where they should be and shock the spa once a week with bleach?
2. Since my CH is 300, is it okay for my pH to go down to 7.2?
3. My TA is usually 60, but has increased to 80. Is that a concern?
4. Is there a cheaper or more natural solution to soak my filter in? Or should I use the pool store brand?
260 gal. outdoor spa, cartridge filter, no ozonator,