Hello everyone. We just got our 30 gal tank together yesterday. Got all the temps correct. Conditioner in. We had one fish to add over from the old tank to the new bigger tank.our plecostomous that's about 4yrs old. He seemed freaked out in his new surroundings an this morning he looked dead but he's moving very slow.a grayish white film all over his body. Im not sure what this could be. Can someone help me.