Edited a little.
Just drained my spa for the first time and probably should have had a better plan before doing so...
how do I drain all the lines or do I not need to?
The spa is just a two person unit and I would guess its probably not more than 150 gallons but I really don't know... any good way to find out?
I've read the sticky on using bromine but am still a little confused and was probably not properly maintaining it properly for the last few months (had a frog stick and the pool store guys basically said I did not need to worry about it too much and just through some bromide in it about once a week)... luckily no algae growth and only occasionally a little cloudy and a little foaming.
It does appear to have an ozonator.
I don't have sodium Brominde but have the tablets as well as a "SpaGuard" product called Brominating Concentrate which it calls a one-step sanitizer and oxidizer. (it does contain 14.7% Sodium Bromide and 82.5% Sodium-dichloro-s-triazinetrione)
Is there a relatively quick way to get a Bromine reserve? How would I do that and what should I use to oxidize it to a useable amount of bromine?
If I read correctly, I could crush up probably just one tab after filling the spa and setting the PH and TA. But should I just use bleach as an oxidizer or can I use the bromide concentrate?