Absolutely. My projects tend to be pretty dumb and over the top...but this rates right up there.

I actually worked building pools during one summer[1], so I would have went a more traditional poured concrete route. I probably would have also had a plan to fill the pool in and cap it with concrete if I planned on selling the house.

Kudos on the indoor garden - I was just thinking of building one, but spring is near.

[1] Caveat - I worked almost every variety of job during high school in a small town...so the 'experience' factor is minimal. Mechanic several times/several farm jobs/baker/librarian/general contractor/factory/etc