I have been taking the pool chemistry readings with the TF-100 for about 9 months now...my most recent readings are:
Back in August they were:
Is this something I need to worry about? I see some varying ranges for 'ok' readings...but based on the pool calculator's target numbers (default), it says I need to add 81 oz baking soda to get the T/A back to 100,
And replace 35% of the water to get the CH back to 260, replace 62% of the water to get the CYA down to 40. It sounds like some drastic changes are in order....
Wanted to get a second opinion as draining 2/3 the pool would be quite expensive...(also does new water have a CH of 0? how can you tell?)