Is this an outside water storage tank or an inside water heater tank? Outside, you can camouflage with tall plants or a screen. Inside, you can add a screen or make a closet for it to hide behind. Whatever you do, ensure you can get to anything needed for operation or maintenance.
Thanks for the help, dear, am going to take screen idea, and connect together sort of like a room divider,
Build a fake wall or removable wall. I had saved this project for outside but you can do something similar for inside as well.
Thanks so much, I like the trellis idea, great pattern,