I have them in my tank, or at least that is what I think they are. They look like stationary caddisfly shells covering the back wall. Sometimes they come out of their shells. They are cool looking and clear... Haven't done any harm, but I bleached the decor and drained out my tank 100% 3 times over and they came back.
I want to see if I have the same things. The things I have look like this:
I want to see if I have the same things. The things I have look like this:
