Re: New Pool... Ozone or Salt?
First, I would get it in a signed contract that they will replace the ozone system with a SWG! (and if possible with a very long time limit so you can see for yourself how high the CYA levels will rise in just one pool season!)
Second, If they are installing a cartridge filter then placing a trichlor tablet in the skimmer is a good way to ruin the cart. Trichlor has a pH of 2 and when they sit in the skimmer with the pump off and then the pump turns on it is the same as pouring acid into the skimmer!
I would bet that they have some sort of deal with the manufacurer of this equipment and get some sort of kickback for each one they sell!
11.75'x23.75' kidney 6.5K gal IG fiberglass pool/300 gal acrylic spillover spa combo; Aqualogic automation/SWCG; Pentair Clean and Clear 150 cart filter; 1.5 hp uprated 2 spd Pentair Whisperflo pump; PF:17
Retired pool store and commercial pool maintenance guy.