Here's an updated photo.
I've been getting some algae (diatoms, rhizoclonium, GSA, and BGA), which is strange because those are the exact types of algae that i got in my 60P when i was using the same buffered RO/DI water... but i've never
had rhizoclonium nor BGA when using tap?! I don't get it.
Anyway, algae issues aside, the tank is doing pretty well. Right now i just have 2 otocinclus and 10 yellow shrimp in there. I hope to get a school of chili rasboras soon. I would also eventually like to get some Limnophila vietnam 'mini'
to fill in the remaining gaps between the rocks and the background plants/driftwood.