Day 4, just over 76 hours since first metro dose.
Everything is the same about the two test beakers except the medicine.
Here is my control beaker (no metro)- brown string developed yesterday and bubbles visible today.
Here is the metro beaker (higher than recommended dose) - no strings or bubbles, but there are dinos in brown clumps on bottom
So there is visible macroscopic difference. However, under the microscope, no obvious cell morphology differences between the two beakers.
Looks to me like you'll see it with your eyes before you see it with the scope.
Control
Metro
Finally, here's the dinos from my tank wrung out of filter floss into tiny beaker
Under the scope, still evidence of reproduction/splitting