Sacrificial Anodes in an Aluminum Hot Tub
How sacrificial anodes protect an aluminum hot tub, why magnesium rather than zinc, how often to replace them, where to source them, and the four things anodes cannot fix.
The first year with a cedar hot tub involves a genuine learning curve. The tub goes through a break-in period as the cedar settles and releases tannins, the water care routine takes a few cycles to become instinctive, and the first winter asks for attention new owners often do not anticipate. Month by month, what is normal and what needs action.
For most owners, maintaining an AlumiTub is significantly less demanding than maintaining a conventional spa. The smooth, non-porous aluminum interior does not harbour bacteria the way a porous surface or a complex plumbing system does, so the baseline requirement is lower to begin with. How much effort water care actually takes depends on how you use the tub and what your property provides.