Sorry you have had back issues, I to have back trouble and could now walk They wanted to do surgery after talking to surgeon I opted for Chiropractor with decompression, 3 months treatment I’m 100% better with no pain and can now walk. Hope your surgery fixed the problem. I I have a in ground 18×36 liner pool, being away to long the pool needed help and had brown residue on the bottom. I vacuum to waste that used way to much water. Is there a better way to do this. I enjoy your videos and Thanks so much