Child of the 60's. If you can remember it, you weren't there.
Lowering TDS!!!
23,000g IG plaster, textured ceramic 'mock slate' tile and flagstone cascades. Three levels (upper wading 16" dp, other 3.5-ft slate cascade); two skimmers. New Ultraflex II. Pentair Intelliflo 3hp pump, 4-cartridge Hayward filter. Two other 2 hp Superpump II push water features (jets, cascade). Las Vegas, NV (desert enviro). Water temp: winter avg. 45f, summer avg. 86f. Water service: private well, TDS hard @ 250+pp, pool 770ppm!!