I bought a Beachcomber hot tub (model 580, 430 US gal. cap.) this summer and have been enjoying it. I started out using their bromine regime, but I changed the water last weekend and switched to chlorine. My plan is to use dichlor with weekly (and pre-party) MPS shocking. I frequently go away for short periods, and my plan for short absences is to shock with MPS and toss in a float dispenser with trichlor pucks. I know it's not the dichlor/bleach method recommended here, but does this sound reasonable? What do you think of MPS shocking + trichlor pucks + turning down the temp to 80 deg F for a week to 2 week absence? (I haven't tried this yet.)
My other question is: what are all these Beachcomber chemicals and what could they be replaced by? This is what I have come up with so far:
Clean 'n' Clear - is ordinary sodium dichloro-s-triazinetrione 62%, aka “dichlor”
pH minus - is sodium bisulphate, aka dry acid
pH plus - is sodium carbonate, aka washing soda (replaceable with Arm & Hammer Washing Soda at $6 for 3 kg instead of $6 for 600 g at the spa shop!)
Soft - is some kind of pH neutral borate, which could be replaced with borax and muriatic acid
Resist - sodium bicarbonate, aka baking soda
Protect - calcium chloride
Purezyme 3 - not sure, it's some kind of coagulate
Eliminate Plus 2 - not sure, it's a "stain and scale inhibitor" and contains carbolic acid
Pure Blue - not sure, it's some kind of coagulate and maybe a blue dye?
Eliminate 1 - not sure, possibly Phosphonobutane-Tricarboxylic Acid?
Foam Free - not sure, it's a defoamer
Filter Pure and Filter Cure - are filter cleaners that can be replaced by TSP
Thanks for any advice. This site and the Pool Calculator have already been a great help.