I'll be getting a brand new 300 gallon hot tub this morning with an ozonator. I plan on using bromine and have Sodium Bromide to build up the reserve and bleach to oxidize. I've got a test kit and will get the TA and ph set before adding the Bromide.
Should I add Borax like I did for my pool?
Is there anything else special about opening a hot tub for the first time?