Sand or Cartridge Filter for New Pool

[Toybuilder]

Rinse is a setting on most multiport valves. Your builder may be installing the full flow valve as flow for the spa appears to be the factor driving filter and pump selection. I don't know if the full flow valve option has a rinse position. There is an MPV option for that filter but it would probably restrict flow.

I think your builder is offering a nice filter and you'll be happy with the water quality. Don't worry about the half-ton of sand, you'll never have to replace it (unless you use Baquacil or cellulose DE substitute).

Thanks BigDave. I'm sure the builder will review everything once the pool is done, but I'll keep this thread to remind me once the big day comes. Thanks again for all your help.