I have a 32 gallon bio cube and I recently did a water change and for some reason I think it might have killed my skunk shrimp and lawnmower blenny. I haven’t seen them for a while now and I fear they’ve met their end. The other tank mates are perfectly fine (two clownfish, a pincushion urchin, and an emerald crab). I tried tearing apart the rock work to find them but no luck. It’s like they just disappeared. I know I didn’t suck them up when changing the water cause I saw them after. I’m not really sure what to do. Since it’s a smaller tank I’m afraid of an ammonia spike. I was thinking of getting some hermit crabs so maybe they’ll be able to find them. What do y’all think?