Pastor Jack took all the sand out of the pool filter and took out the tube with the protruding fingers. The tube was split in two. The fingers were fine.
We set out to replace the tube. It seems they make the tubes differently nowadays. Our tube only has one opened end. Tubes these days have both ends opened. So Pastor Jack had to get a plug to close one end.
So, now the filter is working. But there's a bunch of sand on the floor of the pool. So, it will need to be swept up. No biggie.