So thanks for all of the advice and tips. A good deal of update since my last post. I was able to get and add in the DE as instructed and it has definitely helped with the fine particles. Additionally, I found the technique of brushing the settled fine dust towards the main drain really did help to get those into the filter. Also having a skimmer sock and cleaning it often has helped as well.
My water numbers are solid at this point at 4 for chlorine and have been stable with PH at 7.2 with minimal effort
The g3 simply would not work for a variety of reasons. I tried changing the diaphragm with no improvement it just kept getting stuck in the same place so I opted to get a dolphin m400 from Marinas at a decent price with no tax.
The bad news is that the dolphin arrived looking used. It was not in an M400 box it was in a large big in parts that looked like it was just thrown in and not packed well at all.
It has a crack in one of the wheel hubs, large scrapes in the actual sides of the wheels, and the caddy where the power supply sits has cracks. The white Teflon rollers on the treads of the actual unit look like it has been horribly compressed/damaged. I called Marina's Pool and Spa immediately and on request sent them pictures and now when I call back it seems like they not answering my calls. The previous times I called before reporting this issue they answered right away. I don't want to be impatient but I would expect a call back fairly quickly given the 1 person I spoke to yesterday seemed surprised that what I received was not double boxed and was in the state it was when it arrived. The box itself shows no sign of damage so it clear the item was shipped in the state it was in when I received it.
I am all for getting a decent price and saving on tax but if this is what you get its just not worth the minimal savings for the $1000 purchase.
Does anyone have any advice?