Visibility III / V
The heat of summer has done its trick in the perimeter pools and dried up last year's top pools, for example, almost non-existent. Only one pool has seen the perimeter momentarily over the last few weeks. In that basin, I do not think that the perimeter appeared at any stage last year, and that is why it differed from the others. I transplanted this puddle with a bucket of surface film from another pool that still looked like a perimeter in June so that the flame then contributed to the pathogenesis…
From the morning the perimeter was easily separated, but during the day the heat of more than 30 degrees made the algae go wild and after the work the situation could be distinguished from afar. The film was so thick that nothing to see came off. However, I took advantage of the situation and grabbed a container of succulent-scented bottom sediment and water for the home incubator, then I brought my own report on the results.
Here are the first two pictures from the morning and the latter from the afternoon views.