SWG for Vinyl Liner

[markeast]

We ended up going with the ecosmarte. I asked him to put in a SWG twice during the construction based on the information I gained here. But, the builder encouraged us to try the copper ionizer/oxidizer. He said we had 60 days and could change if we're not happy.

The pool walls and floor are very slick. The water seems to be pretty clear. The Ph was around 7.2 but he told me to keep the Ph low, around 6.6, and the water hard, very hard. He added muriatic acid and calcium chloride. I tested the Ph and didn't seem to budge so I added more acid. It's around 7.0 now.

Now I've read the heat pump manual and it says we should have 0 ppm copper, much softer water, and a Ph between 7.2 and 7.4. I've also now read that low Ph is hard on the liner. We want to ask him to switch us to the Aquarite SWG, but I'm not sure how the copper (.4) that now in the water will react. Will it cause staining? Can the switch be done easily?

Brand New:
20 x 34 Kafko Tahiti (it's really 16 x 34, see other posts)
Pentair HP 1200R
Hayward SuperPump
Hayward Sand Filter (with glass)
Kreepy Krauly
Ecosmarte