Noticed one of the pumps for the 260g wasn't blowing bubbles at the tank return. Unplugged it and pulled it out of the sump and could feel something squishy in the intake. Looked like a fish. Thankfully, just a small piece of foam and a rock. I think the rock has been in the pump since I set up the tank. The previous owner used red landscape volcanic rock in the sump and a piece must have been overlooked. That pump produces some serious flow now.