Hi Wizard!
Thank you for the detailed instructions. I really like the idea of filling the bottom of the Womb with sand but I wonder if that would upset people who like to jump in as it would decrease the depth? I would like to try scrubbing and vacuuming the Anniversary pool, Contemplation pool and Womb when I can get down to the springs next time. I also think the Serenity pool needs to be vacuumed as it has a lot of loose algae floating around. I assume a Monday or Tuesday in the early morning might be the best time to do this as it would have the least visitors.
I'll report back when I get the chance.