Sorry, yes. Pleco, not oto
I did a liquid and strip test from siphoned bottom water and got:
ammonia = 0ppm
nitrite = 0ppm
nitrate = 5ppm
hardness = 150ppm
chlorine = 0ppm
total alkalinity = 160ppm
ph = 7.4
This is after a 50% water change, though. Honestly, the nitrates may have gotten in...