I am guessing here but I think 1) your salt is too high. 3000ppm is the usual target. 2) If your pool is vinyl there is NO reason your CH is 350...again, too high. If it's concrete or tile, try lowering CH to 200. If vinyl, consider replacing the water with virtually 0 CH. 3) Your CYA should be a minimum of 60 for your SWCG (check your manual) 4) I think your T/A is too high, especially with CH=350. You'll want that down, too. 5) If PHO is phosphates, that's probably irrelevant. 6) You should also have the pool store check for all kinds of metals.

But, as I said, I'm just guessing here.