Have you ever seen a sand filter without laterals in its interior?
We own a fairly decent above-ground pool (can't remember exact size) and started noticing clumps of sand on the floor of the pool.
We turned to the internet and found out it could be a number of issue, most commonly blamed on the filter laterals and center pipe.
We own a 'Lomart Spectra 4 17"' Filter model. The model and part assembly can be found here: Link
As you can see from that model and assembly, this filter does not have any laterals. Well we took to disassembling it anyway. We removed the multi-valve thingy at the top that controls the direction flow of water. Upon removing that we see the center pipe. We removed all the sand from the filter and found that it is indeed cracked on the bottom part labeled as #2 in the diagrams. The problem is that we cannot remove the center hose at all. If you look in the diagram, there is part #20, a screw, which actually comes from the bottom from the outer shell into the center of the tank itself.
I took some images to better show this:
You can see quite clearly the cracks at the bottom of the center pipe. That screw, however, just twists and twists, presumably due to the nut also twisting inside the center pipe. How is the nut able to be reached? How can we remove the center pipe to fix/replace it? Any ideas?
We've tried googling this extensively, but have not found a sand filter without laterals and someone facing this issue.
Thanks, and apologies for the long read.