Well, not quite...

I have a DE filter so I don't dump & fill on a regular basis. Rainwater duming is all I'll be doing.

I plan to close my pool way late and open it way early. This is my first run but I'm thinking April to November...we'll see how reality goes...

I also only plan to drain below my returns, leaving them open to allow overflow to drain out the pool. Opening 'refill' will only be about 6 inches.

I have no idea on the 'rate of rise' my calcium would have, if I used CalHypo...but there won't be the dilution you're suggesting.