Amonia down from over 10 to now 0.4 (in 2 days, thats a nice drop) nitrites are off the chart, well above the darkest color on the test, nitrates starting to make an appearance. No appearance of diatoms or gha yet...but I went with black substrate and i have noticed a few individual pieces scattered around are brown, so perhaps thats the diatoms but the black masks it well, nice benefit. No appearance of anything algea related on the tank, not on the substrate, glass, back of the tank, rocks, etc. Perhaps running no lights has helped mitigate their appearance...? Amonia spiked and held there for a around a week I think, then in 2 days dropped over 50%...at this rate I'm thinking another 2 weeks, which would put this tank at a 6.5 week cycle time. But tests will show for sure...funny too how the tank doesnt smell with that thing in there that use to be a shrimp...figured it would be rank big time.