It’s the part that sucks water. Idk it seems like dead fish get sucked into it without actually getting sucked in it’s too small of a part and it’s got slits. Idk I’m thinking of getting an air stone as well as a sponge
I have two Cory catfish that attached themselves to a power head. Thinking they were dead I tried prying them off the filter to throw away turns out they were alive. I’m worried did I kill my fish?
I found out my tank only had 4 ember tetras in my thirty gallon. I have
5 corydoras
5 cherry barbs
8 neons
1 honey gourami
How many ember tetras should I have?