Is there room for two toilets by any chance?
You deserve your 14" and he deserves his 17 - 19".

The first one I looked at on HD was 16.5" and claimed ADA compliance, hmm.
I suppose that some very short people needing ADA compliance might not want 17+. But wheelchair seats are about 18", the height of a typical chair. I'm 5'1 and shrinking and if I were using a walker I'd want to stay with my 14.5. Donuts are a drag - they are plastic and stain, plus the opening is so &*^%%*) small that they quickly get dirty.

No, no room for a second toilet. I told him to take a tape measure with him to HD.

Typical dining chairs are too high for me now, and I hate to sit back so my legs dangle like a little kid's. Plus, my thighs are short and don't allow my knees to bend at the right place (so then I have to sit forward).

I can not advise against using muratic acid, or any acid, in a enclosed area such as a rest room strongly enough. As a young boy I would take limed up toilet bowls out in the alley behind the shop and boil the lime out of them. Over half a century later my lungs still carry the scar tissue that the acid fumes caused. A few years ago I lost a good friend when he used a commercial drain cleaner containing sulfuric acid in a unvented bathroom. Acid IS NOT A GOOD IDEA to use to clear mineral buildup. Take it from one who's paid the price. . If you wish to control roots RootX or Robics Foaming Root Killer that contain Dichlobrnic are two products you could try.
A less expensive way would be to call around to garden supply stores and ask for fine grain Copper Sulphate. Put a 1/2 pound in your toilet and flush it down. Repeat in 6 months. Regards, Tom

Thanks, Tom. He seems to be more worried about lime deposits than roots at this point.

If I had to remove lime I wouldn't use acid to do it. I'd snake the line using a cutter blade tip or a chain knocker and then flush the lines out,

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You could HURT yourself being a plumber!

Hey! That's why we make the BIG bucks, Tom

Back to the toilet question. All you need is a standard round bowl toilet. Most regular/standard toilets are 15". The good new is they are quite a bit cheaper than ADA toilet, that normally measure 17" (without seat). Sure, almost all brands have an ADA bowl, but the standard 15" bowl is much more common.

And you are correct, Wondergirl, plumbing isnt exactly the safest occupation out there. Takes a certain type to not get hurt, or at least not show that they are hurting,,lol

Tom, are there "bucks" big enough for what we really do? If we really charged what we are worth when it comes to some of the stuff we have to deal with, nobody could afford us, huh?