Thinking about setting up NSW holding tank for water changes instead of mixing

[L/B Block]

Yeah the conclusion from that was you could keep anything except Red Sea Coral Pro (and of course any other salt like bio actif or anything with organics in it) for weeks.

How long can I store saltwater after mixing? | BRStv Investigates

For those reefers mixing small batches of saltwater and using it rather quickly after mixing, worrying about the Alkalinity and Calcium parameters shifting is typically not a concern. A growing number of reefers are mixing large batches of saltwater, less frequently and use

www.bulkreefsupply.com

Trying to remember what I use to use when I made SW -but I would make one batch that lasted about 30 days.
I did see some sediment build up over time in the container but no impact otherwise.

 

[Kensington Reefer]

but did you keep corals? high end sticks?

Corals....yes
High end, over priced sticks...no