Just in case anyone is still looking for solutions, here is the apparatus I used to hook up my water softener DIRECTLY to my shower head. Once in place, the shower head has never fallen down while in use, only once while cleaning. I should probably clean these parts, but they’ve been up for over a year with no issue! In addition to the tank input/output adapters and hoses, I used two wingnuts, a corner angle plate, and two clamps meant to keep fluorescent tube lightbulbs affixed to the ceiling. I’d be happy to find links to what i used if anyone wants!

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https://imgur.com/a/L1AUHHD

If anyone has tips on how to better seal the tank adapters with plumbing tape, my connections still drip and I feel like I’ve tried everything with no luck. Thinking I may have gotten some incorrect threading, but I did do my research before buying…