I am curious though. How would they have gotten in there? I haven't added any new materials, plants, or fish in over a year. Also I did notice a very small white thing darting around the same cup of water but I was not sure if it was even something alive or a piece of dust.
After cleaning my tank I collected some of the dirty water to water my plants with. I let it settle in a clear glass and I noticed a lot of very small reddish worms on the bottom which eventually collected into several balls
Tank size: 10 gallons
pH: 6.8
ammonia: 0
nitrite: 0
nitrate: 40...