Recommended every 3β4 months. Most owners forget.
Your spa water has a lifespan. After ~4 months of use, total dissolved solids climb past the point that sanitizer can keep up. A proper drain & clean is the single best thing you can do for your spa's longevity.
- Full drain β removes all old water, including what's hiding in the plumbing
- Line flush β biofilm cleaner pushed through the plumbing for 30+ minutes
- Shell deep clean β surface treatment, jet cleaning, scumline removal
- Filter clean or replace β chemical soak or new cartridge
- Refill & rebalance β fresh water, full chemistry start-up to your set point