Thanks for the kind words

Your "from scratch" setup has been an inspiration for me while setting up my new system, though admittedly my lack of experience in this sort of thing, as well as college-related funding limitations, have prevented it from being anywhere near the same level
Still, I'm working with what I have and I'm happy with the direction the system is going. My pH probe arrived on Friday and I've just made it home to get it. I know, that sounds weird, but I have all of my stuff shipped to my parent's house rather than my apartment, as there's really no safe place to leave a package in my building. Plus I end up back here filling my RO jugs at least once a week anyways. Anyways, when I opened the box it seemed like the probe had leaked a bit...there was a substance shockingly similar to salt creep on the probe around the soft clear plastic end. It seems to still have a good amount of liquid in there, so I'm figuring it's probably fine. I guess if it doesn't work I'll be giving MarineDepot a call tomorrow to try to sort things out.
Which brings me to my next big, dramatic, eventful, and incredibly exciting update...I've just ordered a new set of filters for the RO/DI system (an AirWaterIce 75gpd Compact Reefkeeper). I checked the TDS and found them at 20 :eek2:
Probably not a huge deal, but it's much worse than 0, and it's been at least a year since any of the filters have been replaced, so I figured it was probably long overdue. Sediment, both carbon stages, and DI chamber total came up to about $50 shipped, which is well worth it in my opinion.