First off some sad news for you all; my newest betta passed of unknown causes about a week ago. Tank temperature was 74 and water parameters were all fine so I'm not sure what happened. :(
The same day I bought him I also purchased some live plants and a snail hitched a ride over as well.
I haven't changed the tank water since the death as there's no room for more plants in my other betta tank and I left the snail in there as well.
Today while watching the snail I noticed something tiny move across the glass very quickly, and then I noticed they are all over
the glass! Like hundreds!
There isn't any in my other betta tank so I don't think they're from the plants. I also don't think they're from the snail.. So I'm guessing they're in there because I left the water in the tank? Could they have been there before and killed my fish?
I managed to get a picture of one in focus