As far as the valve after SWG... bit greek to me. Is there something I need to address Dirk with the PB? I would rather do it now than later! FWIW, this PB is good.. .he only does high end custom pools....
I'm sure the PB knows more about pool hydraulics than I do, which is next to nothing. And I shouldn't be commenting on plumbing that's not even connected yet. But that's never stopped me before!!
There may be a perfectly good reason for that valve after the SWG. It just seemed odd to me. If it is, in fact, a shut off valve, then if it's shut when the pump is on, the water, the pressure, would have no place to go. Just something to ask the PB about: what it's for, and if there's any chance of a problem for the system should it get turned off inadvertently. I'd be interested to learn what it's for.
Regarding the booster: the pump needs to draw water from somewhere, and then boosts the pressure on its way to the Polaris. In the pictures, it looks like there is a PVC T fitting, right after that "mystery valve" with a reducer in it, right next to what looks to be the 1.5" PVC pipe for the pressure port (the pipe that will lead to the Polaris), also with a reducer in it. Since they're right in front of the booster pump, and look exactly how mine was connected, I'm guessing that's what those two are for. And if they are, the T/reducer is where the booster will be drawing its water. Which is after the SWG, which produces super-chlorinated water. The rule of thumb is that the SWG (really any chlorination system) goes last, after everything, so that chlorinated water goes right to the pool, and not through anything else, like a heater or a solar system. Presumably that's because that much chlorine, all the time, will eventually wreak havoc on machinery. So maybe that doesn't apply as much to a booster pump, but maybe it does. Another question to ask the PB. My booster was plumbed just before my chlorinator, which is why I spotted this on your system. Again, I'd be interested to hear about your PB's take.
I brushed the entire pool today... I will brush again tomorrow... and every day for the next 4 weeks!
Twice a day is recommended by NPC. What I was told: new plaster can shed dust, and that dust can settle back on the plaster and stick, permanently, which will affect the feel and look of the finish. By brushing the plaster, you keep the dust from sticking, sending it into the water instead, where circulation sucks it into the skimmer to be filtered out of the water. My new pebble didn't shed any dust, because they acid washed it the day after they installed it. So I probably didn't have to brush at all. I never saw even a puff of dust. But I brushed it anyway, twice a day, just in case...