Had to search out information on the white worms on my glass and came across the common thinking that a thriving population (in my case - planaria) is encouraged by over-feeding or gravel left in a less-than-pristine state. Well, my worms (LOL) are obviously not aware of the conventional wisdom. Despite the fact that my Betta died a year ago, at which point I stopped feeding, and I've continued to clean the gravel and change the water to keep the plants healthy, my pesky planaria are everywhere. They must be finding something to eat, because they're getting nothing from me. They keep company with the comical seed shrimp, so I still enjoy the aquatic life - albeit with a magnifying glass!
Jj
Jj