I'm looking to make some changes and increase the automation of my pool. We are currently getting the 25,000gal plaster pool resurfaced. It has a spillover spa with a small fountain. Suction 'PoolCleaner'. 2-speed Pentair main pump, sand filter, Nirvana heat pump, Stenner based chlorinating system, and Pentair LED lights. The wife wants a saltwater system & I would like to add an acid dosing system and possibly automation to the valves. I also need to repair/replace the air injection spa pump.
I was initially looking at the Simpool Acid dosing system but now that I am looking at Hayward for the Salt system I'm now thinking about going with the OmniLogic to run everything. If I do this what acid system would be best to use? Also, how does the heat pump and pool pump hook into this system. Is it a basic on/off relay for each and the heater just stays on/off vs selecting spa/pool on the pool heater meaning I will now just leave the pool heater on "spa mode" at 102 and the Omni will cycle it on and off?
Am I forgetting anything? Any recommendations?
Lastly, different subject, what can I expect in regards to chemical needs after the resurfacing? Just a ton of acid loss?