That's pretty impressive. I can't get a reading that wouldnt be at least 3 pages off from the included ULR booklet. It's more of a "Humbling Checker," although in your case it looks like you've got it nailed. I would definitly slowly swing that alk back up a few points, sounds like you've got it worked out.
Thanks. I haven't even ran gfo or done a water change since I started this tank. Only thing keeping my phosphates in check are bio pellets.
I'm still working on getting power to my shed where my mixing station is. It's def on the to do list this weekend. Wires are already there, just need to get the conduit and box.