this morning i found my clown flopping around in the back of my bio cube where the bio balls are... he had water flowing on him but he has been mad all day ... i also noticed my hermit crab is missing a claw...my puffer that is usually very mellow is freaking out and keeps flinging up and hitting the top of my tank... i have no idea what is going on... i have had the same base rock for about 6 months ... i took a small piece and let it hang out in my other tank for a bit to seed it.. so im not sure if something is spooking them or what ... it was pretty freaky... i have kept the lights off to see if they will calm down.... any suggestions????