Brand new IG salt water pool. The builder stopped by yesterday to put in the salt. I was expecting to see a ton of bags unloaded to bring the salt levels to 3000-3100 ppm. He unloaded 5 bags and dumped them in. He left two more bags and said that if the readings were not above 2500 ppm go ahead and add 1 bag, wait 24 hrs and then check it again. Everything I have read told me that 5 bags wouldn't be near enough for a 25,000 gal pool. I checked by that evening and the salt level was only at 1800 ppm so I went ahead and added the two bags he left. I now have it at 2200 ppm. Everything in me says to go ahead and buy another 3 bags to get it above 2500 so cell will begin producing chlorine. Brand new to this so I was looking for some expert advice to either confirm my thinking or tell me I'm crazy.