Update.
Tested last night (first time since starting biopellets one month ago)...
NH3: 0
NO2-: 0
NO3-: 0
And determined that my phosphate test is too old, but the recent cyano outbreak (again, really?), makes me think they're still too high. I've started rinsing frozen foods recently, but I haven't fed them much lately.
This is an improvement for my tank, as the nitrogen cycle was always just measureable on this test kit, but I'd like to see that damn cyano go away for good.
As far as how things look, well... they are about the same. My purple pocillipora has better color (green skin!), but my large, long-time monti is dying from the center out, but that started before the biopellets.
I didn't expect to see huge changes, as my tank's been doing fairly well, but I wanted to see how the tank would behave if I eliminated the observable (WRT test kit) nitrogen cycle and the occasional cyano. There are some things that are really doing well, and there are some things that are questionable. I have noticed over the years that it doesn't really matter what I add... Some things make it and some don't. Luck of the draw/nature of the hobby, I suppose.
I do have an observation about feeding... For the amount of biopellets I am using (~125ml in a 120g), I don't need to get too crazy over-feeding. I think if I feed the corals reef chili or coral frenzy ~2 times/week, mysis/cyclops once or twice a week, and feed the fish ~4x/week, everyone seems to be doing fairly well. I might swap out 1 or 2 flake feedings with frozen, as it benefits the corals more.
Paul