So I was looking at my fish tank today and I noticed something odd. On the glass, there are many tiny feather-like things. They are translucent white and they look like small feathers. They are about a millimeter long on average. I couldn't find any answers by looking online. My guess is that they are either little spores, or some strange organisms that I've never seen before.
My tank is a 29 gallon planted freshwater aquarium. I've had it set up for almost a year now. I had a diatom (brown algae) problem, but I recently introduced three otocinclus fish and they cleared it up. Last time I did a water test, the pH was really high (8.4) as were the alkalinity and hardness (300 ppm
), but I have since been taking steps to get that under control, so those are presumably better now. At the time, nitrates, nitrites, chlorine, etc were fine.
I attached a picture but you can't really see the things. They're so tiny. They are attached to the glass at their bases and the feather-looking part just kind of moves with the current. I don't think it's ich as I haven't seen it on the fish. Under a magnifying glass, they look sort of like cobwebs in the shape of feathers.
My main questions are: Should I be worried and how do I get rid of them?