Ok, haven't really updated this in awhile. I did run into some issues after the sanding as there were some areas that just weren't responding well to water and fertilizer like the rest of the lawn so I was starting to get worried. I couldn't quite figure it out at first as I was going through all the possible things that it might be so I started with the basics of fertilizer and water and that didn't really seem to do anything so I finally was pretty sure it could be a fungus but wasn't sure what kind as it was something I hadn't really seen before as it was affecting large areas of the lawn but was spread out over the whole lawn. I was also getting a ton of mushrooms in the lawn too which I thought was strange since I hadn't added any organic matter to the soil and had pretty much removed anything that would have caused them. I think I had Anthracnose as most of the symptoms matched that description. So I sprayed Propiconazole and Chlorothalonil together at max rates and after a few days the lawn started waking up again and was responding to fertilizer applications and water. All the mushrooms were gone to which I was more than happy about. THIS is the reason I DO NOT like mushrooms in the lawn as I take them as a warning sign as to things are NOT right in your grass.
I also had a weed outbreak in the lawn during all of this too so I sprayed the Celsius/Certainty/Prodiamine combo which took out some of the weeds but realized after everything else started to die off that I had a major infestation of Goosegrass so I reached out to friend that hooked me up with some MSMA which seems to have taken care of most of the Goosegrass. I applied the Prodiamine to get me through until Fall and prevent any other weeds from growing. The lawn is finally thickening up now and I am glad to be over that hurdle as I was really concerned for a little bit.
I am currently cutting it at .5" and I am on my 3rd round of PGR. Just using T-Nex alone really slows the growth down on TifGrand as I can almost get away with cutting once a week and barely fill up 1.5 grass catchers full of clippings. My plan right now going forward is just to maintain what I have for the rest of the season and then get a soil test done once it goes dormant for the Winter. I am definitely going to need to do another sand leveling next year but I also plan on incorporating an aeration/asphalt roller project in the Spring as I think that will go a long way to getting everything smooth and level and to take down some minor high spots in the lawn too. I'm also getting low on fertilizer so I plan on taking a trip on Friday to stock up for the next few years.