I am fixing to drain my pool (full drain, not just partway) as soon as we have another day where it is not 100+ degrees outside. Several chemistry measures are off the scale when I tested them, and the previous owner did not drain the water for the past 7 years. Once I do this and replace the water, in what order should I adjust the various chemistry elements of the water (e.g. total alkalinity first, calcium hardness second, Ph third, and so on)? Such a sequence is not immediately obvious in what I have read in other forums here and on the Pool School (I enjoyed the thoroughness of the PS articles, however!).
Details about my pool are:
1. Located in Phoenix, AZ.
2. Pool is in-ground pebbletech with an attached spa.
3. Estimated pool size = 8000 gallons + 500 for spa.
4. Sand filter, chlorinated system, with pop-ups in the bottom.
5. I do not know the pump size; I'll look again this evening.
6. Pool was built by Shasta Pools 15 years ago.
It is interesting to note that if I were to have Shasta come out and walk me through the operation of the pool systems and/or perform any repairs/draining (the heater apparently does not work), they'd charge $180 per hour! To this site's credit, the pool school and forums helped me to avoid the high feels so far!
Thank you in advance for your help on this topic!