I collected this sample from Stowe Pool several weeks ago and it has been sitting in our study ever since on the shelf. I have added some sugar from time to time and it is starting to stink a bit!
The following is a small sample pipetted out of the jar:
The microscope is my Zeiss IM microscope with LED illuminator and phase contrast:
Video from the sample today:
Photos – including rods and spirochaete bacteria: